Instruct: Classify the given review into positive or negative sentiment.
Query: TDK doesn't honor their warranty

I bought this 100 disc spindle and was unable to get them to work on a brand new dual layer unit. I wrote TDK customer service via email. They told me to send the spindle back for a replacement. It is now almost 6 months and 2 emails later and no response from TDK. I will never purchase products from a company that fails to honor their warranty regardless of price.