My mother received a call from this number, claiming that she owed money in taxes, and that she was looking at jail time for tax evasion, demanding that she pay $1,500 immediately. Luckily, she knew she didn't owe any money, and also, my coworker's parents had been through the exact same situation/scam three weeks prior, so I was able to reassure my mother. They seem to target elders (anyone over 55). Please be aware of these scammers. It was quite a dramatic and hectic ordeal for my coworkers parents

I received a call claiming an arrest warrant had been issued by Revenue Canada for fraud because I owed back taxes.  I replied that Revenue Canada doesn't make this kind of calls, but sends a letter! Thanks and don't call back!

I got the same call on June 26, at 4:50 PM.  Since I knew the civil servants would not be working at this time, I did not bother to keep on speaking.  In addition, the woman spoke a broken English.

Got a call July 8, 2015. @ 11:30 a.m. From someone with a heavy East Indian Accent claiming that he was a CRA investigation officer. Almost sound legit until they started getting stupid. They claimed that I owed for tax fraud. Joke on you stupid idiots who do not deserve to have Canadian Citizenship. Who allowed them into our good country to try & commit fraud on innocent human beings?!! I know that not all East Indians are criminals but, for these bunch of stupid idiots they do not even know the Canadian constitutional Acts furthermore when did CRA started to ask to transfer large sums of money through Western Union.!!! There's possibly two or one East Indian Man and One East Indian woman working this scam all with extremely heavy accent. So, BEWARE.

Got a voice message today (July 9th) from this number saying that an arrest warrant had been issued against me, and that unless I called back within an hour "legal action would be taken". I barely could understand the message because of the heavy East Indian accent and loud background noise. Sounded fishy and I thought I should check the phone number for possible scams related to that number... Glad I did! Thanks everyone for sharing your experiences...!