Billing query going nowhere

I have not been receiving by allocated Data bunlde since February 2015. I have numerously phoned the call centre, went to MTN in Nicolway and Northgate to resolve this issue. None of the consultants have shown the ability or competence to understand that the amount that I should be receiving on a monthly basis is less that the allocated bundle as part of my contract. Everytime we escalate or log the issue with their billing department, and everytime I get a \resolved"on the request and a one liner that shows less than no understanding of my query. It seems that MTN has regressed to the point that customer service has been placed on the back-burner."""