Evasive claims from TELKOM Billing after landline cancellation

I relocated and so cancelled my TELKOM Landline and the ADSL , more than six months ago , and paid all my outstanding Invoices by direct Bank stoporder over the next two months . Now six months later Telkom began submitting Stoporders for the full amount to the same Bank Account over October and again in November . No Invoices are outstanding and none were e-mailed