Instruct: Classify the given review into positive or negative sentiment.
Query: Too many defective pans in stock

I bought the Norpro mini cheese cake pans. Each time I had issues. 1st pan came from "Potential Dynamix". Discs were missing. Amazon refunded. I repurchased. 2nd one arrived from A & L Inter. Pan cups were rust, but Amazon exchanged. 3rd one came yesterday from the same seller (A & L Inter). The surface of the pans including the cups were very very rough with many small air bubbles. I don't want to have to go through this again, so I'll keep it. I probably wouldn't use it. What a waste of my time and money.