Vodacom contract

I am HIGHLY disappointed and disgusted with the service I received from vodacom. When I app**** for a contract I asked them to keep my vodacom number, my first invoice showed that my vodacom number was on the invoice, when I received my device no benefits was on my number I called for over 2 years telling them that I never received my benefits and on all the other invoiced was another number that is not my number, I called for 2 years telling them I did not receive a sim card, they told me that they will deliver the sim card never did that also, so I never got any benefits for this 2 years and paid it every month, now I have sent a Phindile & Lennon over email they ignore me flat I have sent emails following up on 28July 2026, 11 Aug 2026, 18 Aug 2026 and today 27 Aug 2026 they ignore me flat they only said that the delivery shows that I received a sim card I told them to log into that never they will see that I never used any benefits because I never received a sim card they just ignore me. Now 2 months ago I cancelled the contract now I receive a invoice that my account is in arrears I called them just to find out that they never cancelled my contract after calling multiple times and that I am still responsible to pay that amount, now I just want to find out something what am I supposed to do now I have been paying for over 2 years and received no benefits or any help and now I still have to pay because they did not cancel my contract I have never been so disappointed in my whole life !