Wrong contract and rude mtn staff

Good moring I have taken out a mtn contract last year May from June 2022 I have complained called emailed msges om Facebook everything but nothing gets sorted out, the contract I signed up for was 160gigs anytime data wifi, the gave me a 30gigs home wifi. I have told them on numerous occasions it's wrong to fix it. Now I have received messages from a Xolani which were not helpful at all and very rude just with a thumbs up response to my messages when I've showed him proof that I've been complaining from last year