MTN in the money at the expense of their customers

After finally getting my upgrade MTN decided to also levy a migration fee on my account in addition to charging me for an early upgrade. I have disputed this and every customer care assistant has confirmed that I should not have been charged a migration fee. The amount charged being almost three times my monthly subscription. This plus the first month plus the upgrade fee meant I had to shell out over R1000 in one month!!!! A ticket has been lodged with the billings section (now over a month in the waiting) reference Ticket : ***. But I guess they have the money and I have to just suck it up!! Dreadful service and they do nothing to correct errors!!