MTN Data!!!!

Worst service ever I had the worst experience ever with MTN this month and wish I could get out of the contract, my data gets loaded 28 of the month, 50 gigs, in 2 days after the 28 October my data was taken, according to MTN I data shared this with somebody?? The number is not in my contacts and I was not on the App, why would somebody GIVE all the data used for business to a stranger, I requested to speak to a manager no luck! I did an afidavit as requested and all they did was referred me to the app with a data statement that does not help with info on who took the data, my data was ****** and this can happen every month until the contract expire, I had a big bill and no data… I have no choice but to contact the consumer council, MTN does not care about me as a customer