Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Never Worked and Unreturnable

This pump is an absolute piece of junk. Straight out of the box, it never worked. It's just a big hunk of useless plastic. Doesn't turn on, doesn't take a charge.In addition, to return it, you have to get yourself to a Coleman Repair/Distribution center. If one of those isn't reachable (and it probably isn't), you have to ship it to them and YOU HAVE TO PAY THE SHIPPING. So it'll cost about what you paid for it just to get your money back.Complete Rip Off. Absolute Waste of Time and Money.