Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Quit after six months

I purchased this heavy duty calculator for my desk in a professional accounting area. I have used Sharp with great success for years and looked forward to many more with this one.The calculator quit working after six months of light business use (a few uses a day on weekdays). I called the company and they said too bad to contact the vendor and see if they would do anything.Well the calculator was around $80 and at our hourly rates it is too small and amount to fight the vendor but we took Sharp off the list of future purchase and may try Canon in our office.