Who called from 6136992213

They wanted my SIN. Politely told them no and hung up. They called back and said they were from CRA. I hung up again. Called a third time and I answered and said f&$k off. They didn't call back

Had a call from this number jan 29/16
I tried calling back 613 699 2213 said I had to put the 1 in front of phone number.
I called back with 1 613 699 2213 said not in service
How can people do this .......

This number called 5 times in the space of 5 minutes. They told me they were from CRA but I had already heard of this scam.

A message was left on my voicemail from this number.  It was rather unclear and it cut off in the middle of a sentence.  It sounded like an older man and he said he was calling about a pending lawsuit which I found amusing.  What lawsuit?  I'm not sure if he said he was from the CRA but I had already read about this scam so wasn't worried.  I haven't received any other calls from this number since.