Billed after cancellation

Hello Peter I have had an account with ADT since their invention and they have never had any payment problems from me sometimes the tariff would increase but I would never get any additional benefits. Last year and I have requested a pre- call recording to be found I called with a complaint about not seeing a vehicle in my area and was told that they do not service the Bosmont area any longer, I then requested cancellation of my contract. In this interim I had changed my bank accounts and did not let my new bank load ADT as one of my beneficiaries because I had cancelled the service, but then ADT continued putting through debit orders on my old bank account and have now cost me lots of money in bank charges for returned debits. And suddenly about two months ago I start getting phone call about being in arrears with my ADT account the most annoying part is that they do not send statements, did not bother to call after 1 or 2 months of arrears now suddenly I get a call about owing + /- R3500 bank chargers really??? and this amount can only be paid within 3 months no other arrangements can be made as per Shirley / Shereen. I also explained to them what I have been going through.