I got the same and I did not call back, he said that his name is officer John Parker and if I did not call him back he will wish me a good luck for my bad situation, I have no idea what he is talking about
This guy called me and he did leave a voice mail saying that his name is officer John Parker and he wants me to call him back otherwise I'll be in a big trouble, it happens also 4months ago that someone called me to give him a credit card of $500 to process my application for the immigration canada although I paid it and send it with my application, I asked service canada and they told me it is all fake