I submitted my I765 application On Nov03, and got the receipt on Nov18, sure there is a receipt number on that receipt, but the number is very weird, it is "wac06xxxxxxxx",I know the 2 number after "wac" is represet YEAR, Why I submit this year, the receipt is next year(2006) and I can not check my case status online, every time I input my receipt number, it just said error, and I use phone to check, it said can not find the case. I do not know what to do now, please help.