My name is Sharmila patel I m us citizen,I have summited the file for my Mother and Father from I130 to uscis.gov 2 Years ago. But as far as i thought i have to sent only 1 check for both of them file to get approved. So because of the 1 check i sent they approved only one file for my Father.my father does not want to come us alone what is the best way to get them here at same time. So what is the best way should i cancel the file and re do the file for both of them at same time?? And if i do cancel the file what is the best reason will i give them.