Why was a customer upset that I refunded their card instead of cash?

Posted by rj451@reddit | AskUK | View on Reddit | 95 comments

I refunded a customer's card payment via PayPal POS, and they were really upset and claimed that it means they've lost the £14, they wanted the refund as cash (not possible through the POS).

I'm confused, did they really lose their money? Is there a type of card that works like that? There was a bit of a language barrier so a full explanation wasn't forthcoming.