Have just logged into online banking to set up a standing order. Was checking through all my payments (DDs and SOs) right at the top was a direct debit set up for AKTIV KAPITAL UK, but with no date and no amount? So I cancelled it, and phoned the bank as I had never heard of them and never set it up. When I was waiting on hold I googled them and it turns out they are a debt collector? And a pretty under hand one at that!
Now I'm stressed! I have had no letters from anyone, I have one credit card and a car loan which are all up to date, I have checked my credit report and everything is good, no missed payments defaults etc. I have no idea who I could possibly have debt with and how the hell have they got my bank account details and set up a DD without my knowledge

The bank were useless, and couldn't tell me anything.
Is this identity fraud? Should I contact someone? Even though they didn't take any money? So stressed right now!