DMI unstoppable ripoffs Carrollton Texas

my grandmother received an offer in the mail to get some extras for a 35 mm camera I thought that it would be a great deal. I wrote a check for the amount indicated and put my address on the envelope that  it needed to be mailed to. With into the next couple weeks I started getting mail in my grandmother's name my address,  which then told me that they sold my address to other companies, unfortunately there's nothing I can do about that except refuse the mail and return it back to sender. I noticed that my check that I wrote to DMI cleared. I have tried everything possibly that I could to locate this company at least a phone number that I might be able to talk to somebody, unfortunately there is no number so I am now a victim of a scam. I am NOT very happy about this,  as I am i single mother with only one income. I really hope that someone can locate these people and turn them in. Thank you for your time and attention.