Please help me MTN

Aftet months of calls from MTN to upgrade, I finally had time today to go in to a store.

I have been with MTN for over 25 years, using the same account and number. My account is always up to date with payments. I was rather surprised when my application was decline.

I have spent the last hour trying to call someone at the call centre to assist and nobody can. I have called 5 times being on hold for approximately 45mins. In the last call I asked to speak to a supervisor, for whom I waited for over 10mins and then decided to drop the call. Not sure how else to get any assistance thus the review. I hope somebody who has the ability to help me reads this.

Thanks