MTN's Bad Tracking/Bookeeping/Support

I have 5 lines with MTN - 2 Contract phones, 2 - 2GB data lines and 1 pay as you go line. 3 are on one account (1 Phone + 2 Data line) and the rest are separate. 10th April, my line gets cut (the one with all three on one) that means, no more data usage on either, and one phone line is dead. Tried to contact the help line - did it twice, and around 45min each time, with nothing but this irritating song. First week in May, the line is back on, but with a surprise - a R4200 bill for a 2BG data line that is capped (and there was still +- 1GB left on the one and around 300MB on the other. Since then I have tried with no effect to rectify it - But guess What - MTN is on strike, so nothing is done about the issue. Now they try to debit my bank account every month with +- R5000. My account also just keeps increasing, even though it can't relay be used, because it is off more than it is on. When I visit the local branches, I can't be helped, because all the staff isn't back. I still have to pay for the lines, but cannot use them - CRAZY. Plus now there are bank charges for these debit orders that cannot go thru