SSN IS DRIVING ME CRAZY

H4-->H1, EFFECTIVE 10/01/06. HAS BEEN WAITING FOR SSN TILL NOW. SSA SAID THE VERIFICATION LETER THEY SENT TO INS HAS NOT BEEN REPLIED YET. EVEN THEY HAVE SENT THE FOLLOW-UP LETTER, STILL NO RESPONSE. THEY SUGGEST I GO TO INS LOCAL OFFICE DIRECTLY TO LET THEM UPDATE MY I-94 INFORMATION IN THEIR SYSTEM. WHAT SHOULD I DO? AND HOW? THE COMPANY IS HOLDING MY SALARY UNTIL I GET THE SSN. WHAT A CARP!!