ADT "REFUSAL" TO CANCEL DEBIT ORDER

The complaint is not about ADT's security service, but in connection with their debit order recovery of subs which have been cancelled at least 6 months ago.

I am renting out a property (in Springs, Gauteng) and, at first, the tenants agreed to carry on with the security cover. I had to give them my password. Tenants moved/disappeared and was replaced by others who did not want the service to save on monthly costs. When I phoned ADT to cancel the service they would not do that because the previous tenant changed the password. I was now stuck and said that I would then just have the debit order returned from my account. Two months ago I went to ADT in Jeffreys Bay, where we now live, to explain to them the issue. I completed a form on which I stated the history. Lo and Behold the next month the debit order went through, which I had returned by the bank. The next month the same, just double the amount.

How else can a person get some action?