From The Beacon, the USCIS blog:
If someone claiming to be a government official or law enforcement officer calls making threats such as deportation, beware! Hang up and report it!
Here’s How it Works
A number appears on your caller ID that may look like a legitimate government number. When you answer, the person on the phone poses as a USCIS or other government official or law enforcement officer.The scammer will say that there is a problem with your application or additional information is required to continue the immigration process. Then, they will ask for personal and sensitive details and may demand payment to fix problems. The scammer may tell you to make a money transfer or go to a store to purchase a money order, voucher or make some other type of money exchange, payment or withdrawal. They may threaten you with deportation or other negative consequences if you do not pay.
If you receive a call like that, we urge you to hang up immediately.
We will never ask for any form of payment over the phone or in an email. If we need payment, we will mail a letter on official stationery requesting payment. Do not give payment over the phone to anyone who claims to be a USCIS official. In general, we encourage you to protect your personal information and not to provide details about your immigration application in any public area.
If you have been a victim of this telephone or email scam, please report it to the Federal Trade Commission at http://1.usa.gov/1suOHSS. If you receive a suspicious email or voice message and are not sure if it is a scam, forward it to the USCIS webmaster at firstname.lastname@example.org. We will review the messages received and share with law enforcement agencies as appropriate. Visit the Avoid Scams Initiative at uscis.gov/avoidscams for more information on common scams and other important tips.
If you have a question about your immigration record, please call the National Customer Service Center at 800-375-5283 or make an InfoPass appointment athttps://my.uscis.gov/appointment. You can also use myUSCIS to find up-to-date information about your application process.