MTN worst service I have ever encountered!!

I upgraded my contract in February 2022 with agreed package including 50 gigs anytime, 50 gigs night and 20 gigs promotional data. Since the beginning to date I only receive 30 gigs anytime (20 gigs short) and the correct night and promotional data. My contract states I should be on 120 gig plan with a different plan at the back (30 gigs) essentially detailing 2 different plans on one contract document. The consultant who assisted me is well aware of the problem as she did this upgrade on a day they had endless connectivity problems. She has tried without success to escalate and resolve this in the past 2 months to no avail. Absolutely no response from the team she is communicating with to resolve this. I have since also responded and threatened to cancel this voidable contract which has all fallen on deaf ears. This is absolutely unacceptable and poor service from MTN South Africa all I want now is to cancel all my contracts!!!