RCS - ******** debit orders!!!

I am very disappointed in RCS. I have made a payment on my account ( even going a little over the installment amount), only to see that RCS ********ly deducted the installment from my bank account, which i have NOT given them consent to do, EVER! This is ******* and I want to know who has given the go ahead to go through my bank statements, get my banking details and do a demand debit order when I have just, yesterday, made a payment on my account. I work in an environment where customer's personal details have been compromised and here we consider this as a serious ***** offence. I want to be contacted immediately because I am not reversing the ******** debit order and still paying reversal fees. It needs to be sorted and it needs to happen very fast!