MTN Contract Cancellation Not Done

It appears that despite requesting our contracts at MTN to be cancelled numerously, MTN Direct still continued to renew these contracts. We have since been sent from pillar to post to cancel 2 contracts - although we have requested this since November last year already. We have visited MTN in Port Elizabeth that could not assist us. And called the 135 number. We were sent from one agent to the other and ended up with only a name of Gloria at MTN Johannesburg that did the unauthorised upgrade / contract renewal in November 2017. Please MTN please assist us here. We were not given a email or phone number to contact Gloria or her supervisor Sumil in Johannesburg.