Instruct: Classify Amazon reviews into positive or negative sentiment
Query: didn't work and I was futile to return it

I opened the box up to test it before giving it as a gift. No worko, nothing. I had ordered it 55 days earlier and I am now stumbling through amazon-madness to find out how to return this thing, there's no ph#, no link to return it like the items I purchased. I was looking forward to using this, now I may be stuck with it.