Incorrect subscription

During July I changed my subscription from Compact to Family. The total debit order for July was correct at R279 being R199 plus extra view R80<br> This months debit order has just gone off for R399!!<br> I am livid. <br> The call centre tell me it will take at least 14 days to refund me<br> UNACCEPTABLE<br> Firstly - what gave Multichoice the right to change my subscription, and secondly it is MY MONEY and I expect it back in my account within 2 days<br>