Product: Debt collection

Professional Debt Me - XXXX XXXX In XXXXXXXX XXXX at XXXX XXXX XXXX in XXXX, TX I put in my 30 day notice to vacate this apartment facility. This is the policy that is held at these particular apartments. At this moment I had fulfilled my lease and was renting month to month with them. This means I was not on contract with these apartments at the time. My last month at this apartment was being pro-rated and I did not owe the full months rent it was for a balance of {$500.00} dollars.
XXXXXXXX a leasing agent came to my house and did a walk-through and cleared me to move out. Later on that day I spoke to the leasing manager and the payment for {$500.00} dollars and she explained to me that their was nothing else for me to do besides hand my keys in. I did not hand in my keys due to the fact that the office was close after I was finished moving and I moved 45 minutes away.
In XXXX XXXX, I received a collections letter in the mail stating that I owe Professional Debt Mediation/XXXX XXXX XXXX for a broken lease. I did not get any phone calls or notifications to this point about the balance. I then called the collection company and they started to name all of the charges and this did not add up to me at all so I called XXXX XXXX. After speaking to a manager who was new and not familiar with the case she told me that she will look into it and grab my file from a storage unit and give me call. I never received that call and continued to get calls from Professional Debt mediation.
About 6 to 8 months go by and I try to attack this again and at this point its a new customer service rep at Professional Debt Mediation calling me and a new manager at XXXX XXXX. This time I made some progress with the manager she explained to me that the XXXX dollar payment was returned due to non-existent account ( this was because of a fraud situation on my checking account ). In that the other payments was because of improper move-out which was not true as well. She claimed I broke the lease and that I never had a proper checkout. That 's what the notes said. I explained to her that these things were not true and can she look through my file. She then stated that she has to get my file from storage and she started to do further investigation. After her investigation on my computer file that did n't have detailed notes she says that she sees the error and that it clearly said that I had a proper checkout and that I did give them my 30 day notice. She said that she has to get with the book keeper so they can get my file, then they will give me a call back. I never received that call and I explained that to Professional Debt Mediation and they basically said that they did n't care and that I need to pay full balance or else.
XXXX XXXX has still not gotten this file and I have not had a resolution. I understand that I owe them a payment but, this company has made a XXXX payment into a XXXX plus payment with false information. They have been bouncing me around from them to the collection company with no real concrete information. Also, have been making threats and not hearing me out so I can get this remove and taken off my account. I lived at XXXX XXXX for over 2 1/2 years and besides this only had 1 other separate issue but have been a really good tenant to this company. All I 'm asking for is fairness to get this taken care of.