Unwanted upgrade

I phoned Vodacom on the 16/07/24 so that they could please keep my contract on Flexi 0 since well my contract was ending that month end. The consultant that I spoke to upgraded the contract and gave me a sim only contract. I specifically told the consultant that I wanted to keep my options open for upgrading incase I find the package that suits my needs. When I went to Vodacom outlet because I found a package that I wanted I was told that I couldn't upgrade because I already upgraded. I phoned the cancellation department on the 25th and I was told that it would be cancelled in 5 working days the next week when I called again because it was still not cancelled I was again told that it would be done by the end of the end. Still today the contract hasn't been cancelled and now I can't call again because my number has been blocked. I have a customer with Vodacom for more than 20 years but the service I am getting is very bad I think it's I time I move to another provider