Instruct: Classify an Amazon review as either positive or negative.
Query: Disappointment

Bought in March and just got around to installing and it seems to be defective. Is this company still in business? Have emailed them 2 times, called 800 and long distance number. LD number rings busy and 800 say that they are closed and it's after hours. All mailboxes are full and no messages can be left. It's been like this for over a week now.