frustrated...

I own a rental house. Last month my tenants told me they would be moving out and would be out by the end of June. No problem, I put a sign up in the yard, posted an ad on craigslist, and have patiently waited. We've had a few calls and emails and I've shown the house twice. Yesterday I met some potential tenants at the house and let them have a look around. To my surprise the house is an absolute disaster, shit everywhere! Also, when these tenants moved in I allowed them to paint as long as they painted again before they left. So, their crap is everywhere and 3 walls in the living room are still a deep red. Let me remind everyone that yesterday was June 30th, the last day of the month. Technically I should be able to rent the house out to new tenants today. There is no way that is happening, I'll bet that the house isn't even empty yet! I am so irritated. And of course the chance to get any money from them for an extra week is not likely! I have learned my lesson, I will never mix business with friends again.