H-4 application trouble

I paid a law company $600 for my family's H-4 application. but there is a mistake in the H-4. the law company ask me to pay extra $350 to fix it. he said he provide correct information, USCIS goverment made mistake. and USCIS asking $350 to fix it. I feel angry that I pay USCIS's mistake. first I think USCIS should fix it without charge, second, if it's the policy of USCIS, then the law company should pay it, why me?
BTW ：USCIS charge how much if I apply by myself?
Thanks

_:mad:_:mad:

所有跟帖： 

• 350刀，我記的是這個數。 -大塊磚頭- ♂ (40 bytes) () 08/10/2010 postreply 06:04:35

• 300刀給移民局，50是其他花費。 -大塊磚頭- ♂ (0 bytes) () 08/10/2010 postreply 06:07:54

• 回複：350刀，我記的是這個數。 -xianwu- ♂ (9 bytes) () 08/10/2010 postreply 08:13:07