Vodacom Cancellation

We cancelled an contract in Dec 2020. They keep on deducting my account with this contract included. I spend many hours on the phone to get this resolved. In Jan 2021 a lady and her manager listen to the recording and she aid it is cancelled and they will refund my money that did not happened I pay cash for my account. This month the same amount were deducted. I phoned again and twice the call were dropped on me. The third time I were transferred from pillar to post. I spend again 40 min plus on the phone. This time round I received a SMS that the cancellation was not success full.

What more do I need to do to get this account cancelled? It seams to me that the staff at Vodacom are *********** to do their work. Why do they recruit people that cannot do the work?