Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Terrible seller experience

I ordered this item over a week ago. It said the product is in stock. A whole week has passed and this item hasn't even shipped, let alone be delivered. No matter how the item performs when it finally arrives--if it does--I can't see how one could possibly rate the experience any higher than below acceptable. If you must buy this category of product and need something fairly quickly, forget this seller and go get it elsewhere.