Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Three Screen Issues - Amazon won't replace

My family has three Kindle's - In the first year, two screens started looking jumbled (not broken) just the text was unreadable. Amazon Replaced both. Just returned from a trip and discovered the same issue for a third time. This time Amazon will not replace. I'm moving on to the competition... why would I re buy a product that has a serious flaw.