Hello NandaMurinBK (Is there a nick I can refer you as?)
There is a very high probability that you got caught in a Pre-Approved Labor Scam. Did you pay anything to the Consulting Firm which advertised like that? Also, INS is not stupid in the sense that if a whole name is different from that of the I-140, they are not going to send it back and request a change in name. That is total BS. Nonetheless, you have the right to sue your firm and there is a very high probability that the firm will be shut down forever if the right authorities are informed.
Don\'t trust me on immigration matters, but check out this link:
http://boards.immigrationportal.com/...d.php?t=123495
Good luck!