Unfair Treatment

I got a contract phone end of January with MTN and the agreement was that I would be debited on the 25th of every month. In February I didn't get debited and when I made an inquiry I was told that I would be debited in March. In March I didn't get debited and again I had to inquire and this time I was told the debit order was done but they were still waiting for confirmation. A few days later my service gets suspended and when I inquire, I am told its because the branch code I gave them was wrong. I don't understand how this could have happened because I provided my payslip and bank statements with the right branch code. The lady I spoke to reinstated my service and we arranged a method of payment. A debit order went through the next day. Now a few days later again my service has been suspended and I am told it is because there is an amount of 67c that I didn't pay and also the installment for February and I have to pay this money before I can get the service back. This is all not my fault, I provided the right documentation someone else captured wrong details and I now have to suffer for a mistake that I didn't make. It's in the middle of the month where I am now supposed to get this money? I was clearly told that until I pay the money there is nothing that can be done so basically I'm taking the fall for something that's clearly not my fault. Very disappointing.