Who called from 6123266809

Caller ID: Minneapolis MN
Called number back and message says: "You have been contacted for marketing research or a sales call." I am on the "Do Not Call List." They also call from 612-326-4344 and when I call back I get the same message. You cannot leave them a message. The above message just repeats itself.

I have received 3 calls in the last two days, they call and hang up.  I am also on the do not call registry.  How can you get this stopped?

They claim to be RDI, a survey co.

They have called me 3 times in 2 days.  I just "ignore" the call.

They never called the home phone, but called the cell. I just added them to my blacklist. Since TMobile wont block, I installed Call Control for Android. Works wonders. I just hear a little beep when one of the calls I have on my black list tries to get through.