Incorrect debit order

Hi, I can't reach the call centre. I'm pressing all the buttons but the system can't seem to transfer me to a consultant. I would like to know why my bank account was debited with R 170? I was in fact in credit with Multichoice, which was then refunded to me (R199-00) and then a day or 2 later my bank account was debited with R 170-00. I don't have ANY subscriptions so this is an error which should be rectified. I also want to remove all the devices from my account EXCEPT the HD Single View unit (starting with S00008 and ending with X7). The other devices are sold and should be removed from my account. Thanks.