My return was rejected. I refiled a few times and It got rejected again each time after only 5 minutes. What's my next move?

The reason given for the rejection is that one of the dependent's last name or SS number doesn't match with the information in the IRS records. I checked it all and every seems all right. So I followed the turbotax instructions step by step and still each time I e file it gets rejected only after 5 minutes. What does this mean?