I-797C lost, help!!!

luckyman

Registered Users (C)
After I filed I-130(green card's spouse), I got the I797C form with case number and receipt date on it.But I lost this form, can I call USCIS to get a copy of this form? Does that extend my waiting time ?
 
how about GC number?

Can I use green card's number which is unique? I don't remember that long number on the right top corner. And which phone number I need to call?
 
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