12 hours is really short.  If you get a response in that time frame great, but I wouldn't just expect it.  Three days seems too long though.  I respect vacation, etc. but when I go on vacation I set up an out of office reply with an expected return date, never understood why people in this profession utilize it so seldom.  Some of the communication pattern is also premised by the level of urgency, meetings next week are more urgent than ones a month from now.  I generally look for responses in 1-2 days.

....with some if they answer in a week's time I consider it an amazing bit of good luck. Maybe its the providers that I seek out but the typical return on an email (I pretty much always begin correspondence with an email) is anywhere from 1 - 5 days. I thought that was pretty normal. It's also a reason that I never try to book anything for that day or even the next couple of days.

dont make it personal as you dont know what is going on in the ladys life and if you can wait that long for a reply you do, and if you cant wait move on.  

Life is too short to be so easely annoyed.  

I hope this is any good to you xxx

12 hours isn't enough time. I usually pull the plug somewhere between 1 and 3 days. If I don't get a response than I simply move on.  You seem high maintenance ? While it's to late for this post you might want to complain using your alias  

Many of us have 12 hour dates.  Do you expect us to stop the fun we are having to take your call?  I turn off my phone when I am on a date.

We do have a life where we do normal things like go away for weekends.  I do not take my phone with me during this time because this is my own time.  What about if I am visiting with friends and/or family?  I will always return a call as soon as I am able.  It could very well be after 12 hours, not because I am not interested but just because I am busy.

There was one girl I was in the midst of setting up plans with, all thru email.  I had emailed a day and time, and after I hadn't heard back in a few days, I wrote it off.  6 Months later, I got a reply saying "I'm sorry, I can't make that day, can we try another one?"   After laughing my ass off for a few minutes, I emailed her back calling her on the late reply.   She apologized about missed emails and such.  Nice girl, but still haven't gotten around to seeing her, since that episode put me off.   If you're that unorganized, I worry.

Generally, I think 3 days for a first contact email is more than enough to wait.   If they haven't gotten back to you in that time, you can't take it personally, but you do need to move on.  It doesn't really matter about the issue, it likely has nothing to do with you.  

Some girls do have a link on their site or other's listing their current availability, or schedule.  Some also have note about 'same day appointments'.  I think a provider who list's that info would be expected to have better than average response times.  I have upon occasion, contacted a girl in the mid morning and able to set up an appointment for a few hours later.   That's certainly not the norm however.  Again, if they don't get back to you, just move on.  

Good luck and play safe,

DkG

I only expected to get a less than 12 hour response from a lady I have seen before or have been prescreened with.  

I gotten responses from ladies from 2 minutes later, 9 months later and even 1 year later.  
In the past, I would get very frustrated but the longer you are in this, you realize you wont connect with everyone you want to and then just move on.   When you move on, you realize how much money you have saved, so thank you ladies.  

What is more important than speed is sincerity.  I have had emails go into their spam folders, they were dealing with civi life stuff or on vacation.  The ones that reply saying, Im sorry for the delay or something cordial, those are the ones you want to meet.

The ones that say, I have a life and I will get back to you when I feel like, then they did you the biggest favor and just move on

... you can try checking her posted availability. For instance in my own ads I put that I'm available to answer messages between 10am and 10pm and I can almost always get back to someone within 15 minutes unless I'm otherwise busy. She might also have a schedule posted on her website. There's any number of ways to see when she's available.  
I know one provider who is only available one day a week, I don't know how quickly she responds to her emails but there are a number of ladies I know of aside from her who are only available on a limited schedule due to a civilian job or commitments. That might be why some people are experiencing longer-than-average response times.  

I know that even just for myself I spend a solid 4 hours every single morning doing nothing but answering messages and that continues throughout the day intermittently as I do things like post ads, comment on boards, etc. It's one thing I definitely did not anticipate about this industry & it's something where you need to be organized & be able to multitask in order to be reliable for your clients.

A note on vacation responders - I personally will not use one because I've had it happen every so often that someone accidentally emails me from their 'real life' email instead of their hobby email. I don't want someone getting an auto-response because they hit the wrong button & end up ruining their privacy. Because of this I just put up a notice on my website & in my ads about when I'll be on vacation.

Email kinda sucks, but at the same time I understand that providers would be doing nothing but fielding phone calls from tirekickers and window shoppers all day if they were to keep their phone as their primary source of contact.  Email allows them to get back to them in a more orderly fashion, as well as keep a history of the conversation so they have context and can keep the clients straight.

And, lets face it...email also is a litmus test of sorts to gauge if the client on the other side (or the provider) has at least some rudimentary grasp of the written language.  I'm not saying that someone who can't spell or punctuate is an idiot (some of the colleagues I have worked with who are tremendously successful have the written-language skills of an elementary school kid), but it does allow the provider to get some kinda indication of the client.

Three days is a little too late, though.  I mean, unless she is very clear in her website or ad that she takes a few days to get back, it's unreasonable to think a client still has any interest 72 hours later.

I PM'd and emailed a new provider on this site, as well as called her.  No pickup on the phone, but I received a text later.  When I asked her to speak on the phone, she said she only did text until we booked.  Well, I don't trust texting because I don't know who the other side is, so that was a dealbreaker.

Two days later, she answers my PM.  Three days later, she answers my email.

No thanks.

But I didn't exchange any hostile words with her.  I just passed.