Still no call from MTN

This is my 4th request for someone from MTN to be responsible and give me a call and resolve my billing issue, this query is going on from 1st week of Feb, 2 months later, it is still not resolved and MTN have conveniently blocked my number, is this the level of service such a big company provides to their customers, to treat them like they don't care.<br> I have made calls numerous times and still no end in sight. Please can a responsible manager give me a call and resolve my issue, I am already starting to hate MTN and can understand why so many people are moving to other service providers, SHAME ON YOU MTN, you cannot look after your customers<br> Since my number is blocked, i had to get another number, please call me on ***, thank you kindly