Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: disappointing amazon service

A friend of mine recently introduced me to this dart gun that he got from here. I was immediately impressed by it and came to buy my own. I saw this deal between march 14th and may 14th, and figured it would be here a while. But when I came to order it the next day, it was listed as unavailable. I am now coming on 2 weeks waiting.