Disney double billing

It's been months trying to get support from Multichoice. My monthly DSTV premium is inclusive of Disney. However Disney is also debting my bank account since from subscription which is more than a year going for 2 year. The last conversation I had with a consulted, she ask me to prove my claim. Meaning I must obtain banking statements going back that far and send to Multichoice.. which unacceptable right, it is not my fault that you're double charging me.

Please sort out this mess and refund me my money and stop the double billing.

I give you 7 days to resolve this issue.