Contract ***** acts

I renewed a contract in november 2020 via online system. My contract as we spoke over the phone was suppose to be a 40gig day 40gig night and promotional data 40 day and promotional data 40 night. In the month of november and December i received 30 gigs short furthermore incorrect package loaded on the system. I have being phoning mtn from december right uptil current to date to rectify but they keep on giving me reference numbers and nothing has been done. They requested a copy of my contract which was sent to the on the 13th of January 2021 and the response i got that you query has been logged that all. Nothing was done from that date. I rephoned the call center and they said that my query is logged but only on the 15th. All the other times before that nothing was done. Im still waiting and for them. I should also let you know that on the 12th when a received my new data for my other contracts my lines were suspended because payment for the sim in question was not made. I also asked at the mtn store what i should do and they told me that I must not pay till my query is sorted. I did exactly that but to my knowledge I did not receive any notification from mtn that i must pay they just suspendend my whole three contracts. I paid the outstanding for the contract in order fro my lines to be working. Paying for something that is incorrect thou its not my fault. Please could you assist and advice on a way forward because they keep telling me that the matter is going to be sorted out everytime in 3 to 5 working days and nothing done.