There is no response when I answer. This is usually the sign of a marketing company.

Simply "unavailable" came up on caller ID.

"Unknown Name" on the call display.  No message left.

This number is constantly calling me for the last 6 months (if not more), some time 2 to 3 times a day. I never answer and they never leave a message, if I do answer I wait to speak and they hang up. Its a company claiming they are calling on behalf of Microsoft claiming my computer has been compromised and my personal data has been hacked. Anyone know how to get off there list? I did speak to someone once and got into a heated argument each time I asked who they worked for and how they got my number.

Female voice: "This is an important phone call about your credit card no. .........................

This call comes in once or twice a month in the evening

Claimed they are from Microsoft claiming my computer has been compromised and my personal data has been hacked. This is a fraud attempt to get into my PC. Call originates in South Vancouver.