I was almost taken in by a phone call - I had started the process for renewal online, but not completed it as I realized I wasn't yet in the 6 month window leading up to expiration of my green card. I got a call the next morning from "Harry" saying that I could continue the renewal over the phone, otherwise my sign in account would be shut down & I would have problems reinstating it when I came to renew in a few months. I was in the car & asked for the details by email. He rang again later & was so pushy for my paypal/credit card/money order that I was very suspicious & told him I was driving. He told me he would call again in 2 hours to complete the process. As soon as I got home I took a look at the email - this is the site www.usimmigration.us. Yes, the website states it is unaffiliated with any governmental office, but Harry lied again and again on the phone, representing himself as a government immigration employee. Absolutely disgraceful! The phone calls came from San Francisco - *******226 - in case anyone wants to check against their own experiences.