If you have an email trail that $500 was used to repair the whatever and the tenant agreed - you should be fine.

E-mail and hard copy.

I believe this is going to be an expensive lesson, but next time- even if my due diligence take a long time- I will write them an email and text saying to back out of the deal unless i have more time on the due-diligence instead of just waiting. 

Also try Facebook MarketplaceHave a standard email written and ready to copy/paste.Know your financial requirements for tenants.  3:1 rent-to-income. 

This deal was emailed to me.

Also have issue where theres some damage to outside...screens torn out, cut a hole in garage to put a wood burning stove(also against lease) SO last week I sent them a notice via usps(not certified, priority with tracking) scheduling inpsection today at 10am(plenty of notice) also sent copy via email yesterday and text yesterday all before 24 hours.

I am not getting response to the emails I sent.  

Talk to him in person if possible and be reasonable, get his cell or email if you can and do all follow up contact that way and save it.

I sent my loan officer an email with my disagreements and reasoning.

I would ask for the numbers:- how many contacts (calls, emails?)