Desperate to Unsubscribe!

I am sure most of you know what I want to say and therefore it done's t really need to be said. What a shocking company, so much spam and have tried everything to get off of their mailing list. Their link to unsubscribe doesn't work and no one responds to emails, twitter posts, Facebook messages, phone calls, nothing!! And I am at my wits end. Anybody had any luck unsubscribing? I really just want to be off of their mailing list. It is highly annoying!