Shocking Service from Multichoice

I have been trying to change my banking details with DSTV for about 2 weeks and I am receiving absolutely no help at all. The customer care staff have no idea how to do this and the managers refuse to speak to me. At the moment I have been on hold for about 20 minutes after insisting I speak to a manager. I am just being ignored. The last couple of times when they refused to help me, they just put the phone down on me. Apparently this is an ongoing thing that they do. I can't believe how idiotic this is. I've explained to them that my one account is going to close so the debit order will not go off. They simply will not help me. The best for me is to allow them to cut off the DSTV and we'll move on to Netflix. I have 5 DSTV decoders, so goodbye Multichoice - I can't handle your bad service anymore.