Telkom mobile

Hi

I had 2 contract sim card from Telkom. The contract was supposed to end in July. Now I went to Alberton city to cancel the contract at the beginning of August. I filled in a form and was told that I'd still be debited at the end of August since I have to give a 30 day notice which I understood. However, at the end of September I was still debited for these sim cards! I do not think this is a way of forcing me to stay on with Telkom as the reception is not so good. Please can this be sorted out. Thanks!