When sharing your house goes wrong

One Czech man stayed in our cottage for while with people we know (they're friends). The people we know left the country and left the keys with his wife and some how, she lost the keys. We didn't know it until this man emailed to asked for the keys to get in to the cottage, as we didn't know anything about him and don't even know he stayed there, so how can we give him the keys when we don't know who he is? Then he says that his stuff is in our cottage and he want the keys (again) to get it (he said he did not put it in!)... We said no unless we escorted him there, a lot off his stuff was there and he could not get all in that day and once again he asked for the keys and so we suggested he booked the cottage for a week (24th - 30th) to clear his stuff (we just wanted to make sure we didn't loose the last set of keys). Then he booked the house and got his friend's wife to pay with her credit card by lying to her that we wanted money to change the locks because she lost the keys (we learnt about it after the week, when he did not "want" to return the key, when the contact was over). We contacted the lady (since we knew he knew her) to ask what's happening because he did not answer our messages and email.
That lady talked to him and I sent him many messages and finally he replied "I want to prolong my stay in the cottage. I will sort it out next week", I asked him to book again but he said "I'm not there on weekend" and will not book it even though he still had the keys?!?
Then I tried to contact him again, finally he turned up with the keys on 2nd of July saying "I moved out today but my stuff is still in your house, I don't have time to take it".
I said "ok, let me know when you have time, I will come to open the door for you to get your stuff". Last Saturday we got another booking for today, I messaged him and said "please could you come to get your stuff out tomorrow, because we have to use the house on Monday?". I got the message from him on Sunday morning "I will come to you to get the keys after lunch". I said to him again "you know you can not just take the keys, I will be going there to clean, so I can let you in". I was shocked when I got to the house, it was like a really huge rubbish dump and all off the dirty pots and dishes. Specifically he left a pile of dried feces in the toilet...


Sharing this image troubled me
I waited for about 5 hours and he messaged me "I'm on the way, if you are not there I will call the police"?!?
Then he came without even saying thank you for letting him leave his stuff there, he says bla bla. He keeps lying and blames everything else for everything, then called the police after many time he threaten us. We could not understand why he wanted to call the police when his stuff in our house and we want him to come to get it? "I call the police because I don't like you".
The whole conversation with him we recorded, we are happy when the police came and we just told them the true story and showed them the messy house then it was done with the police's promise that he would never bother us again.

I still don't understand what the hell he thought he was right when he called the police?