Sorry, but it is no mistake and it is you who needs to correct his grammar.  He said "Hey I can't really answer your questions" which is correct, he is not saying "You're" or "you" as that would not make any sense at all.  In this instance he used to correct wording.

I am also looking forward to fiaz answering a few of these questions put forth by crazyearner.  Especially the one mentioning visiting the premises of your business.