Who called from 9197544578

I am from Vancouver, Canada.  Got a call from this number at 8:30pm on my cellphone, I did not answer.  I am using 7-Eleven Speakout.  I don't believe I have registered my number in Canada's Do Not Call list.

I live in Vancouver and received a call from this number on February 10th, 2009. A male voice left a message saying he was following up on an invitation that was sent to me to attend a Red Hat Unilogic seminar taking place at the Marriott Hotel - downtown Vancouver.

I had not received any such message nor does the nature of my work have anything to do with this as it appears to be some sort of IT training event.

Here's the link I found:
https://www.redhat.com/training/psp/?s_kwcid=linux%20%2B%20training|2817924921

Ordinarily, I would call back as it's rude not to but I feel no social obligation here to do so as this is essentially a telemarketing sort of thing.

I received this call too at my work number.  We're a research lab, so it's irrelevant to what we do.  Most likely spam so I'm glad I didn't call back.