Refused to pay out, ignored claim for a month, don't bother with them
I decided to go with paddy power and try out their casino. I lost my original money but figured it was ok as I would still get some cash back, but I was wrong.
Paddy Power decided to decline the cash back and I've now had to put in a claim. They've been waiting it out now for a month and still not responded to it, I've lost all confidence in them and just wanted to warn everyone else that Paddy Power can't be trusted to honour their cash back agreement.
Be warned, it's not worth the risk, just go for another big name brand that is safer.
Hope this helps people.