Double debit

I've ordered a Explora decoder 02/15 and debits gone off monthly R 149. On 30/10/15 and 01/12/15 suddenly double debits. after numerous calls to Onair Tv accounts department and mail with proof of double debits still no answer or explanation. today again nobody could tell me why and was passed on to clients enquiries were a very rude lady wasn't keen on assisting me because they were OFF LINE and I must call back, whereby I told he I was not at default and they must call me back but she was not impressed by that. If they would at least just call me back and tell me they trying to sort out the matter I would be much more patient. They force me now to send back the debit order(2) AND THEN ONE WILL SEE HOW QUICKLY THEY CALL YOU.<br> DSTV SHOULD BE ASHAMED TO BE ACCOICIATED WITH THEM. TERRIBLE SERVICE