Vodacom- taking your money *******ly!

Went into a shop to move to pay as you go in November 2022. The shop couldn’t assist and had to call customer care. Customer “care” sold me a month to month contract instead for 1 gig of data per month. All changes were meant to take place at the end of November, we are now in January, and I am still being invoiced for my contact. I had to AGAIN cancel my contract yesterday and this time refused to go into pay as you go, even though the sales people don’t take no for an answer. I’m not using the call minutes from my contract, thinking that I no longer have them! I have requested a credit for the 2 months ******* billing from vodacom, but nobody wants to answer me. Where is my credit vodacom??? This is not the first time vodacom! Shocking!