Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Plugged it in and found it inert

I unpacked this item and plugged it into a wall socket. The little display lit but none of the buttons worked. No functions were available for use. I repacked the toaster oven and shipped it back to Amazon for about $22+ having printed a return label. Strangely, the return had to be paid by me with a refund promised. My refund from Amazon amounted to $10. I went to the local USPS office and found out that I could not have returned the toaster oven for 10.00.I am a long time Amazon customer and have reordered a second toaster oven from Amazon. So, $12.00 is not all that much money ... I wonder why or what I missed cautioning me about using UPS (ground) for the return ... better yet, telling me the amount of the refund at the time of the printing of the return label. Oui??