Terrible Customer Service

Absolutely terrible service. I gave 1 month notice at the start of June. Linda sent me forms to completed and when I completed and returned it she acknowledged and confirmed the notice. We handed the keys in on 1 July. I received 2 nessaged from TPN that my credit record has been negatively affected because my rent for July has not been paid. I sent 3 emails and asked for response and for my record to be cleared. I also tried calling and had no luck. I have been working hard in building a clear and clean credit record in order to buy a house, but now this affects this so badly. At least I know buying a house won't be through Alec Massel. I also still need to get my deposit back which will probably be a fight on its own.