MTN - Poor Poor Poor Service

There is no other platform but this one left to me, to put my complaint on, with the hope of an acceptable solution. MTN convinced me to continue with a contract as a data contract. The contract was converted to a Data contract and I was promised that a new sim would be delivered to me, so that it can fit into my HP Pro-Book. When I enquired I was told that the delivery could not take place. After time has passed I phoned again, and I still do not have a SIM Card, and I have been paying for this contract FOR TWO YEARS NOW. 6-03-2019 Please be advise that your MRN Query is still being investigated and we will provide feedback as soon as it is available. Regards Customer Services. I have now again been holding for 20 Minutes, On hold On hold On Hold. I do not know what to do anymore.