Telkom cancellation virtually impossible

Have placed Cancellation request to Telkom on 2 Feb 2018 after being transferred to different province. Telkom themselves sent me the cancellation form and exact process to follow, which I promptly did. on 17 March, a status query was placed by me to Telkom on 11 April, Telkom phoned me, stating my cancellation was never received - by itself an admittance to receipt, otherwise, how would they have known. on 11 April, same cancellation email was forwarded to employee who phoned me, to their address, who promised it would be placed to back office as urgent. on 10 May, I get order confirmation for a new service??? on 16 May, I get new statement with outstanding amounts for Mar, Apr, May HOW DOES ONE THEN GET TELKOM CANCELLED? Yet, they request credit report every month, impacting on credit score