Concierge Property Management, Ltd

I lived in the *** Apartments in Houston Texas back in 2015-I have never faced as much trouble with living arrangements as I did with their propertyI went to the leasing office in July of to advise I would not be renewing my leaseO turned in a notice to vacate at the end of my leasing termA *** *** signed off on my notice and said he would take care of itOn the date of my vacate, I went to the office to confirm where I could drop my keys off and before they could open my file, they advised that it would be considered a broken leaseHow could you not have this information in your systems? How did you know it wasn't in your systems before you even pulled my file? The representative I spoke with then let me know that the management company recently changed and I was not made aware of thisI now have an outstanding balance of over $on my credit report for negligence on this company's end