Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Do NOT buy from CSN!

These are my favorite pens HOWEVER they were evidentally advertised incorrectly on Amazon as a DOZEN when in actuality it was the price for ONE pen. Called CSN and their remedy was for me to send back all of the pens that I ordered and get a refund because they were unable to honor the advertised price. This is ridiculous! Get it right CSN! Check your ads before posting so that you don't lose customers over stuff like this!Update: CSN called and offered me a full refund and also said that I could keep all of the pens! They have redeemed themselves!