Vodecom refuse to cancellation

I have been trying to cancel a contract since April 2021. The company suspended the service over non payment. They bill for the suspended service and refuse to cancel it even when it was over the 24 month period.

How can you bill for a service not provided is beyond me and think this is legal.

They ignore emails and promise to phone you back but don't. Just hide behind their call centre I have loaded a complain with the consumer protection ! hope they can assist