TELKOM CANCELLATION BUT STILL BEING DEBITED FOR NO SERVICE!!!!!!

SHOCKING CANCELLATION SERVICE OR SHOULD I SAY NO SERVICE FROM TELKOM!!! My mother is a pensioner and requested to cancel her Telkom landline on 4 January 2018, she completed the cancellation letter that was then emailed to ********** on the 4 January 2018 at 15:44 on which she received an autoreply from ********** at 15:45 to confirm that they have received the cancellation request. On 20 February 2018 we logged a dispute with Telkom - Dispute no. ********** 7 (spoke to Karen who said she will escalate the cancellation) as the service was cancelled however her account was then debited again with the amount of R 272,29 on 26 February 2018. My mother contacted Telkom again to dispute - Dispute no. ********** 0 the statement received for March 2018 as the service has been cancelled now for 2 months already but Telkom is still debiting her account - 26 March 2018 debited with an amount of R 256.67 My mother contacted Telkom again today, 27 March 2018 at 11.56 and spoke to Babaowa Williams who confirmed that the first dispute was closed as they had no contact number which I find impossible as Telkom verify and confirm all your details including your mobile number, which shows that Karen the call centre agent did not do her job. Apparently the second dispute is still open and with the escalation department with Nomungu not sure how long it takes Telkom staff to act and finalise their tasks as Nomungu was sitting with this dispute since 20 February 2018 to ensure that the debit is not processed???? TELKOM IS QUICK TO CANCEL YOUR SERVICE AND ALSO QUICK TO KEEP ON TAKING YOUR MONEY. Telkom can you resolve this query QUICK ????? And refund my mother with her money that is being debited for NO SERVICE QUICK?????????