Cancellation of landline - no response from Telkom

<p>I sent in notice of for cancellation of my landline on 27 March 2017, got a email response that someone will contact me within 21 working days, still waiting today 51 working days later, still billing me, how can a company just disregard a clients request as if they are nothing...</p> <p> </p> <p>Poor service...</p>