********** behavior not cancelling a contract

Worst service in the world! Cancelled my contract with them back in 27/10/2021. Received a sms confirming that the cancellation was processed, and the contract will be terminated on 27/11/2021. To this date they are billing me for a service they cannot provide. The number had been ported out and not even on their network anymore. Keep calling their retentions department and no one is able to assist with cancelling the contract and refunding me my premiums. Always claims a manager will call me back and no one ever does. Most recent interaction I stayed on the call with an advisor till a manager phoned me, after which she claimed, the manager cannot get hold of me my number keeps going to voicemail but there is no missed call or attempt that comes through on my phone.

I hope someone from Cell C can get in touch with me ASAP to sort this out, before I have to start a complaints process with the consumer ombud.