Incorrect billing and rude consultant

I am so angry and disappointed with DSTV, I have been debited with the incorrect amount and this is the 3rd moths trying to get get help and it looks like DSTV and the staff don't care and some of the consultants are very rude. I have laid a complain about rude consultant and wrong billing and I am not getting any help but empty promises. I am weighing my options and I think I am going to cancel my subscription.