Terrible service from MTN - Failure to finalize upgrade and Incorrect Billing

I wish that there is a zero-star rating - I never, ever want to deal with MTN again!! I had a contract with MTN which expired om 2022-09-28 (@R799/m). On 2022-10-04 I app**** for an upgrade at MTN Wonderboom Junction (@R299 p/m).

For the past three months I have been incorrectly billed for R1400 p/m. I have been trying to sort this out without any success. The problem seems to be that I am billed “out-of-contract” rates for the expired contract, and that the upgrade was processed but no completed. I have made several calls to MTN customer services, who referred me back to the store. I have since returned to the store several times. The consultant who processed the original upgrade on 2022-10-04 was unable/unwilling to solve the problem. The store manager promised to investigate and call me back, which he still has not done after more than a month.

On 2023-01-17, I received yet again (for the 4th time) an invoice for R1400 to be deducted from my account end of January. I then requested customer services to cancel the old “expired” contract. This is apparently not possible as the system shows that a new upgrade has been approved (but not completed). I again requested assistance from the store to at least complete/or cancel the upgrade but was told by the consultant that the fault was not with them, but with MTN Head Office. Was again promised to be called back by the manager - still waiting......

At this stage I really DESPERATELY want to cancel the new (un-completed, or any old) contract with MTN, but they are making it impossible to do that, seemingly expecting met to pay R1400 (which I did not sign up for) forever! I also expect to be refunded for the R3300 (3*R1100) which has been deducted from my account in error up to date.