Falsely never cancel a contract request

I phone vodacom cancelation to cancel a contract that were already month to month. I had to call 3 times on the 3rd of May 2024 as the first time I got cutoff while I were holding on call duration 1m47s. The second time the guy answering sound like he is in the middle of an extremely noisy mall, call duration 1m55s. Third time lucky (so I thought). As always he eagerly tried to convince me to stay by mentioning alternative packages. I declined and requested to cancel, call duration 11m24s. Now two month later the contract is still 100% active. I would like to demand my money back and a message from the guy that falsely gave me the impression he canceled the contract, but never did (guess he might loose points or something?) Vodacom network is amazing but as soon as one have to deal with admin or support they are a nightmare and would not recommend and all.

So I phoned again today, call duration 12m12s, 1 July 2024 exactly same process and have no assurance that it would be canceled this time!? So have to wait again, possibly been charged again and then phone again and hope for the best again!?