We purchased an offer from livingsocial.com to buy a mattress from Nature's Sleep.com. Inadvertently the deal expired, so we were left the amount paid for the deal to apply to a future purchase. Over the past four months I have tried to do this. Livingsocial says it's not their problem and Nature's Sleep just won't return calls or emails. This leaves me with no place to go and them $600 richer for doing nothing.