Unfair charges on reversal of unauthorized debit order.

This morning I realized an unauthorized debit order for R99. I tried to stop and everse on my debit order, but it gave me an error message. I called a ***** line and was referred to debit orders department. There I'm told that if the app has an error, they are the only ones who can assist me. And they'll charge me R120 for reversal and R60 to stop the order. Mind you, I didn't initiate the debit order, according to me it's actually *****.

The debit order is for R99, yet I must foot R180 for the bridging of their systems. It's clear that it's an internal thing, where else would they get my account number?

I work for a financial institution and I know the importance of PIP and wouldn't be reckless with such.