Cannot cancel contract

I have been trying to cancel a Vodacom contract since October 2020. During one of the calls I was transferred to Elite mobile, spoke to Cameron who refused to assist and refused to give me his surname and kept telling me that I keep interrupting him (even after I told him several times that I am listening to him). After several phone calls and promises that the contract would be contract, I eventually went to Vodaworld on 11 January 2021. Again I was promised that the issue has been resolved and that finance department would be advised and that my money would be refunded. I was also promised that I would receive an SMS within 48 hours confirming that the issue had been resolved. When I requested a reference number I was told that I could use the number that I was calling from, as a reference. Well the contract has yet to be cancelled as the debit order is still being processed.