After Greencard

I visited usa in 2000. I applied for the first step of immigration. I could stay in USA by paying $1000 as Clinton had passed a bill but respecting the law I went back to Pakistan. It took eight years to appear for interview in the US embassy. After interview it was Administrative Processing. The unique administrative process which no one knows when it completes. One day I got an email from US embassy in which my name was stated wrong and my two children were left ou. When I called the embassy they replied that the names has been left out by mistake. So I sent all the documents and passports of all the family members. After two months I recieved passports of the family members that were listed in the email and the passports of two children. It has been almost 8 months that we are here in USA without our two children. Everry time I call embassy the answer is Administrative Process. Can someone tell me what is this administrative process in the embassy.