Appalling Service

On the 9th of November I contact Vodacom to cancel my contract, the agent tells me that December 2021 will be my last payment for the contract to my surprise today I am in arrears and I owe Vodacom for January and February. It is a mission to get through to an agent, my 'cancellation' call had to take a whole 22mins and to find out that even after spending 22mins on the phone it still was not done