Trying to redeem for a swag item, and didn't let you finish checking out, but took your points? No worries. It most likely converted your points into a swag store "credit". You will be able to use that credit for future swag store purchases. Follow these easy steps in the video below.
If you'd like to revert this swag credit back into redeemable Nectar points, you will need to discuss that with your company's Nectar administrator.