My lease at my last appartment expired at the end of last September and I was planning on purchasing a house. According to my lease I had to give 60 days notice of moving out but since I didn't know if I would get the house and still have 60 days to give notice I could only give the apartment a 45 day notice of me moving out. Since I wasn't planning on signing a new lease I would be on a month to month payment. I wrote them a letter explaing that I didn't have 60 days to give them and that I wasn't going to pay for both my mortgage and a months rent when I wouldn't be living there. I received a call today from a collection agency telling me I needed to pay it or it would go on my credit. What are my options for this matter?