Change of Banking details

I have tried to change account numbers for a debit order since July 2015. Same bank just the account changed from a savings to a cheque account. I tried to change online but it just shows pending. My DSTV has been switched off and I had to pay reconnection fees, because the people that work in this department are USELESS! I have sent paper work in 3 TIMES and its still not corrected. They don't have a copy of my ID!!! I have to do an EFT at the end of every month. What kind of service is this plus they are ripping us off with monthly subscriptions.