Pathetic Service as usual!!

Dear Mr Moenieb, after your reply 1 Febr 2016 on Hello Peter - ref no SM195265, we typical heard nothing from Telkom - as we said pathetic!!. We received yet another account for the full amount for a service we haven't used. Up till today nobody contacted us via e-mail or a telephone call. The promises that were made in terms of cancelling the contract also haven't happened! What should a person do to get somebody to perform a task as simple as cancelling a contract and to send us a correct statement, so that we can pay the correct amount and get this settled!!!! Can somebody please tell us what to do???