contract still not cancelled

I have probably escalated this on 4 times ,NO ONE IN TELKOM MOBLE IS GIVING ME FEEDBACK. On the 12th Feb 2018 I received a email from Precious Mnguni advising the contract is cancelled but I still get charged ,and no one gives a DAM to advise me what s going on (I have also instructed them to cancel the contract but the number must just turned in to prepaid for me If I do not get feedback I will be writing the the FSB and to the short term Oumbuds with regards to not getting any feedback from TELKOM Is so hard to pick up your phone and call the client as requested no one does this . Telkom you really have no customer service ,