Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Neck Ache

Bought this pillow at the L.A, County Fair. Used it for a couple of days and noticed a neck ache. Waited for a few days and slept without it. Felt no neck ache.Purchased it for $50.00 No receipt either. My fault for that one.This was a scam to me! Not worth it at all.Want my money back!.Salesman said there was a number for returns or questions on the bag. Not so.