Contract issue

In 2022 I got a sim only contract but have not been receiving my full benefits. I tried calling and didn’t get help, even went to two different Telkom stores and they can’t help me telling me on their system I am receiving the said benefits. Recently they called me trying to convince me to take another sim only contract and told me the only way they’ll fix the previous issue is if I sign up for a new contract which I refused. I even have a Ref number for the dispute. It’s almost a year and I’m paying for a service I am not receiving.