FNB, How can we NOT assist you?

I tried to reach out to FNB secure chat regarding a debit order listed as FNB OB COLL. Needless to say their assistant wasn't helpful at all, nor could I reverse this debit order. Instead of "assisting" as she'd offered, she told me to text later. Bottom line...she couldn't tell me what FNB OB COLL is. I'm yet to understand what this transaction is for as I don't recall consenting to this. If NY suspicions are anything to go by, I need this reversed. So wish I could have gone to a more reliable bank right now!!!