Shocking service from Telkom

Submitted a request to cancel line on 8 Nov'17. Received automated response that request was received. No contact was made. 3 Visits later to Telkom offices, several e-mails with additional submissions and still being billed - amount charged just increasing all the time. Telkom probably aiming to appoint an attorney and/or have me listed as bad payer??? Not sure what intent is as nobody is getting back to me.