Network coverage!

I have exhausted all means to get MTN to attend to my query. We have been out of service since October. We have been logging tickets and follow ups have been done only to be told that “the technicians are working on it”. Today is the 7th of December, approaching 2 months without service and we still can’t connect! We cannot work! But they are always quick to debit us for data we are struggling to use. I just need to know what one needs to do to escalate this query as MTN does not care about us!