We signed up for security alarm services with Monitronics in February 2007 at our home in Tempe, AZ. We sold the home in March 2009 and contacted Monitronics via email to let them know that we would no longer need the service because we had sold the home. They asked us to provide them with a letter, which I did, explaining the reason for cancellation. Never did they mention to me that I would be responsible for an additional year on my contract in any correspondence or telephone call I received confirming the cancellation. Starting in July the collections department - phone number 785-246-6155 in Topeka, KS starting calling me three times each day, even called my sister on her cell phone several times, telling me that I was in jeopardy of losing my "security service" and would be unprotected unless I paid the past due amount. Again, I went through the whole story with them about selling the house and they would each time tell me that I needed to contact Customer Service in Dallas - which I did by telephone and letter. Finally on 8/12/09 my husband called and found out that we were responsible for "buying out" the remainder of the contract because we had a three year commitment with them through Feb 2010. They said they would send an "end of contract" letter to us with the amount owed and we should pay that upon receipt. I received the letter dated 8/27/09 on 9/8/09 and mailed them off a check for the total balance on 9/11/09. During the time period from when my husband spoke with them on 8/12/09 through today 9/23/09, I have received over 11 phone calls from their collections department - most of which I've ignored but four of them I've taken, discussed and explained the situation with the representative who calls. Each time they seem to be confused, not sure what is going on and can't tell me what the status of the account is. Last night I received a call from their collections department at 8:45pm and she told me I owed over $600 on the account. I called the Dallas office this morning to discuss and again they seemed confused and promised me that they would consider the account closed and remove any additional charges since the $409.93 had been received. I would recommend this company to my worst enemy. I've never dealt with a more screwed up company in regards to billing, collection and customer service in my entire life! Buyer BEWARE!!!