Contract Cancellation lack of assistance

I have been trying to cancel my contract with Vodacom since the 28th of October 2020 and till this day it has not been cancelled. I'm told every day that the matter has been escalated. On my last call it was confirmed that it was cancelled on 30 November 2020 but when I go to the Vodacom outlet store to check this, I was told it was still active. Like seriously !!!. Now when I try to call the *** number, I am blocked because I have been calling almost every day to ensure that my contract is cancelled. Now I have to pay for a contract that I cancelled?? Thst is ********* and I require my contract to be cancelled with immediate effect.