I've made the mistake of ordering something in the past which led to tons and tons of email marketing from them. I have been clicking on the unsubscribe in their emails at least twice a week for a few months. Each time their site say " you have been unsubscribed" and sure enough a few days later I get more junk mail from them. I finally created a rule that just deletes all email from them. I guess you could use their site but be warned you will get bombed with junkmail
Dear Gregg,
Sorry for the inconvenience. We sincerely accept your suggestions, and will try to provide better service for you.
Sincerely,
Miniinthebox