No permission given for debt order

In the month of 09 June I placed an online order for a Kendra 5pc double comforter set which was advertised for R129 per month. On the 31 July 2015 i got a sms requesting a payment of R268.26 i was confused and called to find out why the payment is that amount only to be told that i should have called but they never informed me about the procedure when ordering online never the less disappointed as I was I payed the amount cash at the shop on the 1 August 2015. Then the very same day i got a notification of a bebt order thanking me for my payment. My concern is who gave them permission the activate this debt order and where did they get my banking details. which i felt they had no right to invade my personal information.<br> <br> I hope this would be clarified and resolved soon.<br> <br> Thanking you<br> Chrystal Bernardo