Instruct: Classify a given review as either positive or negative.
Query: I regret purchasing it

I bought it because I went through a couple weeks of feeling down. Once I was fine again I went "wow. why did I buy that?" and tried to cancel. They ignored my email (sent 3 days before canceling) then the second it sent I got a response "Sorry, we already sent it". Now I can't get ahold of them to send it back! UGH!