Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Cingular Cell Phone

The phones arrived on time in good condition. But I am disappointed with the fact that I was not able to port my number. It was not clearly indicated the number porting is not available for Cingular service. I was also told later that it would cost $250 to port my old number. It would be better for Amazon to infor the customers when they order.