Mtn contract

I upgraded my mtn contract 2 months ago, where I upgraded to 100gb day time and 100gb night time, but from day 1 I have been receiving incorrect data to both me and my husband's line. His I upgraded to 4gb day time and 8gb nighttime. Surprisingly the amounts that must be deducted is 100%correct but my data's ZERO. I have been complaining and sending emails day and night for past 1 months but nothing gets done. It's soooo frustrating because I am being charged for data that I don't have and what will happen to all those months that passed. I even send them the screen shots of the contracts and emails of the agent that helped me but nothing gets done. I am really really unhappy with their service and the way my query is being handled. I won't even say being handled because nothing is being done about it. It's very unprofessional.