Instruct: Classify an Amazon review as either positive or negative.
Query: Battle Creek Bed Warmer, Medex supply service

Didn't warm at all - Zero. As instructed I contacted Med-Ex supply to return. Was told to return to manufacturer, Battle Creek Supply, so they could confirm it didn't work. If they agreed I'd receive a refund. (Original shipping $8.75, I paid $7.75 to return, item cost $44.25) UPS delivered to Battle Creek Supply on Oct 5th. Three weeks later - no refund, BC Supply states they didn't receive it- Med-Ex is investigating. I've paid $60.75 for nothing.Never again from any supplier but Amazon!