Trump isn't always the most eloquent man in the room but I'm inclined to disbelieve the Congresswoman, given her history and agenda.  I would suggest in the future that all such calls be recorded.  Then when the left makes their claims, allow them to embellish as much as they like, then swoop in for the kill by releasing the actual recording, making the accusers look like what they actually are.  

It is important to look at this with the full context in mind.  Any meaning can be twisted when taken out of context.  So record the entire conversation for posterity and release it as required.