Wrong subscription

i was called about registering my DSTV as a debit order. this person also told me that the amount for registering a debit order would be R749 and this was the only reason i accepted the offer, after asking him if he has my bank details he rep**** yes and it was with Capitec bank. i received a sms from DSTV stating that my debit order was rejected, the problem was that it was on a old Nedbank account! After phonong DSTV and asking about this, they said they have the wrong bank details. I then asked what the amount will be and was told R899? I then told them the story and when i received the call. I then told them to listen to the recordings of the call that was made, i even gave them the number that i was phoned from. I was told that they would phone me back which didn't happen for a week! I then phoned DSTV again and asked the speak to a superior which was Michelle. She said she would look into this and get back to me, another week has passed without a call! I then phoned again today and the amount on the automated voice was over a R1000??? This lady Lerato said she would send a mail to Michelle to phone me which i guarentee you won't happen!!@!

PLEASE HELP