Instruct: Classify an Amazon review as either positive or negative.
Query: bad customer support

I originally ordered a 50 foot power cord from them.Then I saw they had a 100 foot one so I ordered that.So then I went to cancel the order for the 50 foot one.I sent 3 emails to them(item hadn't shipped yet) a week ago and they have not responded. Meanwhile they went and shipped the item. That is very poor customer support! They also gave wrong tracking information