Shockingly poor service received

I have been provisioned with half the data that I was supposed to receive for two months now. The service from MTN has been shocking. Two weeks ago I spoke to a lady who was supposed to escalate the matter, I did not receive the BO number as promissed. Last week Monday I called again and they escalated it for the first time. I was given a 24 hour period for conclusion but to date have received no feedback. Called again yesterday and Bonginkosi promised to call me today to resolve but again no feedback and no calls received. I am absolutely livid at this point. MTN is in breach of contract and I would like to cancel, I refuse to pay termination fees since the fault is with MTN. Truly the worst service ever received.