I have three different times talked to providers on the phone after being screened on 411 and setting up a time to meet, I mention that I am larger and that I will need Mangums...  Almost all 3 of the conversations kind of went off track at that point and the providers ended up canceling on me later.  Did I not handle that right, should I not say anything about it?  Thanks for your help.

If you have big dick, carry your own condoms if you are afraid that she may not have Magnums.

There is no need to mention anything... Hands, Feet, Tentacles.... anything at all.

You never want to mention anything to do with sex on the phone, in a text or email.  The fact that you are well-endowed is a sexual reference and is prob what scared them off.  Follow the other suggestions in this thread.

Swim

But a sealed 3 pack in your pocket is good insurance.  

A big "bullshit" on that one. Not all providers see large or even above average men, so no...we are not "all prepared for any size or preference." If a guy can't fit in the size condoms I have, he is not getting laid lol.

It's not rocket science figuring out creative ways to make it known either, especially when a girl's review history confirms she won't see you if you are large. The big feet comment is about the best way to put it, but I prefer a PM on a site like TER vs. email.

Providers know that guys who have been around and get how this works speak in a certain code and know what to say and what not to say.

Talking about the size of your dick isn't a good idea.

thanks for your help.