Do not fall for this nonsense. It is a shakedown. I have had calls from the same guy saying he is FDA, DEA and has a supoena for me. If you go to FDA sight and do a search you will see they are scammers. Pass it on.
I also received a phone call from this supposed DEA Agent with a heavy foreign accent claiming I had been buying some drug illegally for the past 4 years. I put him on the speaker phone and my husband and I asked him why we weren't notified years ago by certified mail with legal documentation about this or more recently. We asked him how he got my information and what/how was he basing this information on and to also mail to us by certified mail the documentation pertaining to this and we'll have our lawyers look over it. He had nothing to say and became angry and yelled to us that he was sending 2 DEA agents to pick me up. This is a scam, do not fall for it!!! Ask all the right questions to this imposter and DO NOT offer any information about yourself.