Call Centre/ Deducting without my consent

Good day,<br> <br> I had a loan with Standard bank which ended up being handed over to a collections company which is Nimble Collection Services. I have made arrangements to pay R100 and have been paying it. On the 18/01 I received a call from Nimble Collection by a lady called Michelle and I have agreed to pay R500 as from the 25/01/2016 <br> <br> I have not made the payment as agreed on the 25/01 and was still to make the payment.<br> <br> But to my surprise I received a sms on the 01/02/2016 saying Standard Bank personal Lending have debited my account by the amount of R8 512.46 and they also gave me a number to call for any queries...This was without my consent and I was not even aware that standard bank could still deduct my account for this matter as its with the collections company<br> <br> on the 02/02/2016 - I have called first the collection company and Michelle confirmed that they have not debited my account, I then called the number from the sms and I spoke to a standard bank consultant by the name of Steven and his attitude was bad and I asked him to transfer me to another consultant...<br> <br> I want my money to be reversed as standard bank debited my account without my consent <br> <br> Regards