Bad Service

So I have been a vodacom customer for over 20 years and I received the worse service ever from them recently. I canceled a contract in 2020 which they failed to cancel on their side and was debiting money off my account for the past 2years , I called 2months ago for them to cancel the contract and credit my money back into my account as they found the recorded telephonic conversation where I canceled the contract in 2020. The lady I spoke to on the 29/09/22 promised me my money will be in my bank account in 7 working days which has not happened I called the customer care line and again I was told my problem will be fixed and I was also promised a follow up call by Nokuthula the 10/10/22 which never happened. Firstly as a loyal vodacom customer to receive such pathetic service is unacceptable, if you can't keep your promises and making sure your clients are happy, why would i want to be associated with a company like this .I will not be renewing any further contracts in the future with vodacom . I will not leave this matter like this it's money that's due to me and to receive such appalling service for your own money is unacceptable.