Instruct: Classify a given Amazon review as either positive or negative.
Query: Poor Service

I bought this CD for a school Christmas concert. I paid for overnight shipping. The item never arrived and I had to fight with Amazon to get a refund. One is now promised but - "the check's in the mail" attitude of Amazon.com worries me. They keep blaming the company that was supposed to ship the item. However, I paid Amazon.com and expected them to make good on their promise.