Refund nightmare

I sent an enquiry (reference numbers *** and ***) to Multichoice on 28 July 2015 regarding their overcharging on my DSTV account. I have a debit order set up whereby DSTV deducts the subscription on an annual basis for 11 months, giving the 12th month free. I received a statement from Multichoice for R8,569. However, they deducted R9,449 from my bank account. When I queried this, I received confirmation that R880 extra was deducted erroneously and a request would be submitted for a refund. This was followed by numerous e-mails back and forth, the outcome of which is that I've been told that a refund of R760 is being processed which I can expect to receive in up to 40 working days. The problem I have is that I would like to know why this will take so long when the fault is on their side and also why they are not paying back the full R880 which was taken from me. This has been a terrible experience overall and I have since cancelled the debit order on my account due to this.<br> <br>