I thought I would never have to say/do this...

I may have to put someone up on harassment charges.
We rented - to - own our house to this couple, which we had a gut feeling in the being that it may be a mistake ( we didn't know them so that wasn't the reason) well we paid the property and water tax up to the date they moved in, and they were suppose to take care of it after that, as was the verbal agreement, (that was in June) in August I get a call from her saying that her water was shut off, and me being the push over I am, we ended up loaning them the money to pay it for them for the rest of the year ( not that we could afford it mind you) And they were suppose to pay us back, when in Sept. we didn't get a payment we knew we would never see that money again. Then the 1st of Nov. we get a call from them saying they were moving out in a few days!! And wanted the rent back!! I call the social assistance place ( that is who paid us the rent) to figure out how much we needed to give back, according to one guy ( I need to remember to write ppls names down) we did not owe them anything because they had not given us 30 days notice. While later I was actually talking with their social worker, and she was a tad rude she basically said she didn't care what was going on? Huh shouldn't you care that the ppl you give a cheque to each week are screwing you over as well.
Well anyway, we finally agreed to 350$ to go back, no way they were budging on giving us back the money we loaned them mind you. And we and they signed a letter stating the money and stuff that needs to stay in the house.and the date they needed to be out by, The date went by and we waited 4 days (with a lot of harassment calls in between this for more money) we went and changed the locks. They had to scedule a time with me to get the rest of their stuff, so it should be no big deal anymore, it should be done. They are still calling!!! And even at 7:30 in the morning!!! The cop I was talking to told me once their stuff was out and if they kept calling I could charge them with harassment which I got a feeling I may have to. Ever time my phone rings my stomach goes into knots, wondering what crap they are going to get on with this time. Urgh!!!!!