NO SERVICE FROM MTN

I have been a MTN customer for more than 20 years and every time someone complained about them, I would proudly say that I have never had an issue with them, and I am not interested in changing service providers. Well, I am now left with egg on my face. The beginning on November, I went into I store to look at the possibility of an upgrade. When making this query, we found something suspicious about my account and I requested an inquiry, because what the system said when checked by the consultant at both I Store and then I went to MTN to make sure did not match what I was being invoiced and debited every month. It looks like I have been paying too much. Long story short, it’s been a month, and I haven’t heard a word from the accounts/billing department. Even though, the I Store consultant has been following up with them. I am usually a person that wouldn’t bother doing something like this, but I feel that the situation is becoming ridiculous, and I am not impressed that I have now missed the Black Friday Deals because of the query on my account. I wonder MTN, how hard is it exactly to read an account? I cannot even say that someone has investigated this because I haven’t had any feedback. So is it incompetence or the fact that your customers mean little to nothing, if you get your money, then to hell with them.