Trying to cancel my contract for 5 Months !!!

<p>I have been trying to cancel my Mobile Data contract that was due for an upgrade 4 years ago also used it about 4 years ago . I never upgraded so the contract should not even continue. Since August 2016 i have been trying to get this contract cancelled. Sending the correct cancelation form to the correct mail( as the process should be ) I have been sending this form to 4 customer care peoples that every month claims they will solve it and they don't understand why its not been cancelled. Only one of the 4 peoples returned with a mail responce that they have received my form completed in August 2016 , but only after I basically flouded hes inbox ... To my surprize I am still getting debitted for the same amount!!!! I want Telkom to cancel the contract and return my funds that they keep debit ordering </p> <p> </p> <p>Why can't Telkom just Cancel the Contract !!!</p>