Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: horrible customer service

I had purchased six boxes of these bags for some large bullysticks for my dog. Every bag in every box had small pinholes in them (before loading them up). So I called their service department thinking this was a batch problem. They told me that the most they could do was to send me a coupon for one free product. A few months later, nada. So I called them again. They said they would send the coupon out (having no record of our earlier chat). A few months later, nada. I gave up, as I don't have hours to spend on hold for nothing.I know these are STORAGE bags, but I noticed on some reviews some people were using them for freezer use. They are much too thin for that, BUT if you are going to do that anyway, do checks for pinholes first!