Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Sharp R930cs microwave

When I opened the package the back corner was dented! When I called Sharp customer service to find out the cut out opening size for new built in cabinet they would only refer me to a spec sheet for the cabinet opening. The directinons were very poor.My cabinet maker and I were confused about the size of the opening.sharp should make there specs easy to read!I think the dent was caused by being dropped by the seller not the shipping agent!