Contract

I am disappointed with the service received from Telkom I have been calling for weeks after week to get a case resolved and yet no feeback I signed up for a contract in 2020 on a top up plan now that I call for an upgrade they telling me my contract is expiering in 2023. I have ask for reason to that as far as I know my contract is a 24 month contract and is ending soon show how is it that it's saying 2023 I was advised I have app**** for a top in Feb 2021 I than ask how would I have app**** for a top when I initially had a top line it doesn't make sense up until today no feedback I extremely frustrated