Singh, if you read through the other posts, it's clear that this number is associated with a variety of scams.
2012 duct cleaning
2014 computer scam
2015 credit card scam
2016 CRA scam
The number is likely spoofed and you are never going to know to whom it belongs because it's faked. Ignore the call. BLOCK the number. Get a call blocker for you landline and download a call blocking app for your cell. Here's the 800notes forum on call blockers.
http://800notes.com/nb/search.aspx?q=call+blockers
Spoofed 'not assigned' number. Robo call claiming to be from the CRA and that an "arrest warrant has been issued, blah, blah". Using the call back number 1-844-765-3872.
You'd think that the Federal Government would take some action when THEY are being misrepresented !! Just don't fall for the scam AND let your Federal MP know what's going on as they've got their heads in the sand when it comes to all this 'phone larceny'.
Bloody ridiculous...
SCAM! Just received a call from this number saying my Visa debit card has been frozen and needs to be unlocked by pressing 1. I don't even use VISA debit.
Do not press anything and just hang up!