Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Bad Pens & Bad Service

I have purchased several brands of markers including Staedtler, OfficeMax metallic, TUL ultra fine, Bic Mark it fine point, and the Pentel Color Pen Set. Of all these brands I've used, & I have used them a lot, the Pentel brand is the worse one of the lot. When I contacted the Pentel company via their online web site to ask how I can return the whole set, since they are guaranteed, there was no response whatsoever. On the other hand, I returned one of the Bic Mark it pens for replacement & I not only received my new pen in short order they also threw in several $1 off coupons for future Bic purchases! Now, I ask, who would you do business with in the future? It's a no brainer.