getting bills after cancellation

My name is Rafia De Gama. I used ADT as a service provider in Muckleneuk, Pretoria. I relocated overseas and on 11 August sent in an email cancelling the service. I was told first that the have to register the cancellation which took around a week and then a notice period would follow. I received no information further. The y kept badgering m with regards toe he people ho had moved into our premises so that they would take up the a contract with ADT.<br> <br> <br> I am overseas, I have relocated and will not be returning. I have given proper notice and now that to deal with being billed for services I am not using after having given notice and paying for August already. not only that the sent to m to different bills for the month of September to in pay twice. This is unacceptable.