Sounds fishy to me, and generally in life if something looks like a fish, smells like a fish, and acts like a fish...its probably fishy.
I am wondering...out loud here as I type...if maybe Minimax got plagued by that same Firewall Breach as the Hannaford Stores. That is a local food store here in Maine that had 4 million debit card numbers stolen that were stored inside their computer network. Perhaps a hacker got the Mininmax list and is soliciting customers?
If you wanted to, I am sure you could file a grievance with the Better Business Bureau, the Attorney General Office of your state, and other consumer advocates as I am certain there are laws protecting you from such nonsense. In my opinion though, I would not waste to much time worrying about this. I think its a scam. Rather then go on the offensive and go after Minimax, who is more then likely a victim of this as well, I think you would be better off defending your good name...and your good credit...by warning your banks and credit institution that potential fraudulent charges might arise. Let their freud unit proceed on your behalf. I think they have better resources and experience in dealing with issues like this.
Again, something smells fishy here...
I have no intention of traveling from birth to the grave in a manicured and well preserved body; but rather I will skid in sideways, totally beat up, completely worn out, utterly exhausted and jump off my tractor and loudly yell, "Wow, this is what it took to feed a nation!"