Vodacom retentions doesn’t care about customers

I initially called Vodacom retentions and cancellations to cancel my contract with Vodacom, I was then convinced by a certain Paul Maponya to keep my cellphone number on contract and he will give me a contract at 75% off for data this was on the 7th of March 2020 and he said the contract will start on the first of April . I agreed but after careful thinking I decided that I don’t want anything to do with Vodacom and their contracts. I called the retentions call centre to cancel everything with them and everytime the consultant would say they will send Paul an e-mail so he can call me to cancel the contract but it’s been 4 days with no call back. I have been with Vodacom for over a decade and I’m really tired of their bad service and I am truly fed up as they have no sense of urgency when it comes to their clients, now when I call I get an automated message that says my number is blocked at their call centre because they have been receiving a large volume of calls from my number . I just want to cancel everything with Vodacom and go to a different service provider. Can ANYONE JUST CALL ME so I can leave Vodacom and their tiring service.