Tried to get info out of me then became abusive when I wouldn't give my DOB

Caller from "Claims Advisory Group said I had a PPI refund of £2390.
I've never made a PPI claim. Caller addressed me by a bogus name I had given to a previous scammer. I gave a false age and address which they were able to confirm. The supervisor will call me tomorrow to arrange payment. I will of course be asked to pay a fee to get the money. I will play about with them when they call. Good fun.