Incorrect contract / No help / Poor service

I was offered a contract with MTN Direct, I was promised 30gig day and 30 gig night contract with 100 min for an agreed price. I accepted the contract. When my contract incepted I only received 20gigs day and 20gigs night, with 100 min. I called in to query this issue and I was informed that a ticket had been logged. the following month I received the 40 gigs (20 day /20 night) but no minutes. This was queried in October. Since then I have visited 3 different MTN Branches for assistance and I have called into the MTN help line and used the app to log a formal complaint. This weekend I visited a branch again and I was informed that I have 4 open tickets, I have received no feedback and no help what so ever. Its been 4 months now and I still have not received any of minutes or feedback upon my request for the call recordings stating the amount of data and minutes agreed upon.