Canceled but still debited

I have 2 contracts with telkom , one which is home fiber, the second is a contract Sim card .

The sim card is due for a upgrade ,I called in first week of December to cancel it.

I did cancel it ,consultant told me I have been debited already for December ,so the benefits will remain until January.

January I will not be debited, sad to see ,I just got debited for the contract Sim card.

I have no idea why staff in these call centers are working when they dont like there jobs. This is really frustrating as im planning something personal and now im short my funds because of this inconvenience caused .

Please telkom sort your **** out and please replace your staff members if need to.