Vodacom lack of customer service

I tried from April 2020 to cancel a contract. After numerous emails and at least 5 phone calls the contract was eventually cancelled. However this was two months late and money was deducted from my account. I have tried to get the money credited to my account and as usual I am being pushed from pillar to post. Everytime I contact them I have to go through all the questions and history only to be told that I need to contact another department. When I ask for them to senfd the message to the relevant department I am told that I have to contact them directly. Where is the customer service. Its shocking! Why is Vodacom making it so difficult to resolve matters.