Poor - Fair is too generous. My family and I began...

Poor - Fair is too generous. My family and I began renting a house through them over 5 years ago when we moved to the area. The process was painless, and the owner at the time, as well as the staff were courteous an professional. Throughout the years, the staff changed, their owner changed, and so did their location. In 2011, we decided to move to larger house because our family had grown. Once again, the process was painless, and the staff at the time were wonderful. Unfortunately, the larger house did not work out, but thankfully Tiffany (the office manager at QPM at the time) worked with us so that we could move right back in to the same house we were in before. Shortly after that, all the staff changed again (no idea if the owner did, but he doesn't seem to be the one making the calls anyway). In December of 2012, when it was time to sign the lease again, we received a month-to-month instead of our normal 6-month lease. We called and talked to them to express our concerns. We didn't want to have to move again, especially on short notice, so we were wondering why the month-to-month. They assured us that we had nothing to worry about. On February of this year, we received the 60-day notice to vacate. When I called to find out why, they told us that the owner wanted the property back. That was it. We were not financially prepared to move again so soon, and now we suspect they knew this was coming when we talked to them in December. Regardless, we did everything by the book. Did the exact same thing we did when we had to move from the house temporarily in 2011, but this time they decided to keep almost $600 of our security deposit. We received the statement after the 31 days because they decided to wait until the last possible minute to send it, and when I called to find out what exactly all the hours of "cleaning" they had to do entailed, I was told to leave a message and they would get back to me. When I called yet again that very same day, the office manager was reluctant to speak to me on the phone and simply relayed the message to me via one of the secretaries to "put it in writing". After explaining that I had questions about the statement, and much waiting, I was greeted by an office manager who acted like she had no time to deal with the likes of me. When I asked her about the charges, she responded very rudely, practically yelling at me, though I had kept my voice calm regardless of how angry I was. I was promised pictures of the so-called damages, so that I could compare them to the video we took of the state we left the house in when we turned in our keys. We never received the pictures, and the video clearly shows the house was absolutely clean when we left. We are debating whether to pursue this in court, or speaking to our state representative regarding making walk-throughs mandatory for all property management companies, so that way they can't keep taking advantage of honest, hard-working families. Don't waste your time with this one. I thought they were great in the beginning, but with a high employee turn over rate, no one there will care about you.

EDIT: Their response is laughable! Of course their "witnesses" are all people who are paid by them. It's funny how they take their time to explain things in detail here when they didn't even want to explain them to me over the phone. All they kept saying was "put your complaints on writing" when I wanted them to explain in details why they kept all that money. Also, our neighbors at that time can attest to how clean that property was. Those are real witnesses. All pinholes were patched up and touched up. All the repairs their "contractor" fixed were things that were wrong with the house when we moved in in 2007 (that WE even tried fixing for them). Don't bother with these people. As you can see from the other "responses" they have a script or standard response for everyone. You won't be treated fairly.