Lost nectar points at Argos?

First time I tried to use Nectar points online at Argos to part pay for an item. Tried to use PayPal but Argos didn't seem to like this. Selected £10 worth of Nectar points to use. Did not complete purchase partly because I couldn't seem to use PayPal. However, the £10 of points has been taken from nectar. I have emailed them and I awaiting a response. I want those points refunded.
Anyone had this happen or any sensible suggestions?! Thanks.