I've been a Hobbyist for some time but still naive in many ways. I became a Date-Check Member many years thinking that it would be a convenient way to provide references for both myself and someone who I was trying to meet for the 1st time. That it would also not require a lovely lady, that I had met in the past, who was willing to provide a DC reference, to be contacted directly in the future. Is that a good assumption on my part?  Since I can only partake in the hobby every couple of months the alternative would be to ask each lady for a reference and expect them to remember someone they've only met once a few months, or maybe years, in the past.
  My Date-Check references are excellent, containing many of you would agree are the some of the most recognizable providers in the area, 12 in total. The only reason that I'm bringing this up is that recently I've had some meeting requests go unanswered, no response from agencies that I have not used in the past.  Is there a general tendency not to want to use a screening agency like DC or 411. If so, that does not help the occasional hobbyist. Looking for advice.

-he's wants an immediate and/or very short notice. sorry fellas, if I answered those sort of emails I'd have to increase my rates to accommodate the 8-12 hours every day it would take to do so.)
-he requested an appt on a date that I will not be there (didnt read website, not serious just a time waster),  have already left the city he wants/ed an appt in.
-If he ask "when are u available"....see website. Those emails never get answered and are fruitless.
-he's been blacklisted and/or "not recommended" by another Provider.
-Ask me about $, sex or weed....no response.
-Or she's just busy on vacation or who knows...where like that, unpredictable
There more but that should get ya started.

I can't speak for the providers, but if they have a profile on either of those sites, I would think they would accept your references from the site you used for verification.  She might want to contact one or more of the references you have there, but the site makes verification easier, that's her call.

If the provider is not a member of the site, she may or may not accept them as a reference.  In answer to your last question, I am not aware of any tendencies to not accept verification from those sites.

Swim

I am aware that some agencies don't accept P411 or DC etc. as verification. They want to do there own screening. I have found though that agencies have a quick and easy screening process though as with everything else YMMV applies.

it just looks like you chose the wrong places to contact.

The screening sites you are on help us tremendously and it is very quick to get a response from the ladies you have seen. My advice is to contact ladies from those site for your dates where you will get a response. Its so much easier for us when we can already see all the information about you and email the ladies to get you verified.

Those "when are u available" requests don't realize we have better things to do with our time than play email tag. If you go to our website, fill out the contact form then you are halfway there and we know you are serious about seeing us. Everything you mentioned gets a delete from me also. When guys complain that we didn't answer their emails well this should give them a little perspective. Show responsibility for yourselves. We are running a business and I am pretty sure you wouldn't act this way with any other business.