When I reached out to customer service they said this is a glitch they are aware of and in the process of fixing for Bigger Pockets customers.

So now the argument has nothing to do with Florida law and is resting on whether the proration depends on actual vacate date or what the date of termination was in their notice. 

My concerns with selecting a servicer are the following: customer service, access to funds, access to education materials so I can learn how to stay away from prohibited transactions.

Sounds good, will send you some feedback on a couple reverse 1031 exchange providers that our customers work with. 

As a full service design-build firm, we are capable of so much more (full custom new builds and large scale renovations and additions). 

Lots of competing interests with this argument.

If not we replace and charge the customer for time and materials.  

Everybody I have called said no except for one company that only does portfolios with established customers

This applies in most areas of life, but if someone is simply agreeing with you, dropping PM fees down a percentage or offering discounts up front and sounds a bit desperate, they could be experiencing high turnover and poor customer retention.

I've found that when you push back using a logical argument based on evidence, you tend to get blank stares.