Instruct: Classify Amazon reviews into positive or negative sentiment
Query: great product, poor service and incomplete shipment

I love the glasses. They are beautiful. But I was very dissapointed by the fact that I ordered two sets, and only received one set, although the packing slip stated that my order was complete. After calling to report the problem, I was told I would receive the second complete set that I had ordered. Shortly after that, I received an email stating that the item was out of stock and could no longer be ordered. So I had to call again to request a refund since my credit card had been charged for a shipment of two sets, which I never received. In the end, I am one set short and have had to make too many phone calls. I'm still waiting to see if I receive the refund on this month's credit card statement.