Hi Ketevan,
Congratulations on your new job, and thank you for sharing your experiences!
I know a bunch of immigrants in Toronto who came with their advanced degrees from their home countries; however the only jobs they were able to get were at call centers. So it's the same situation here... I also got called for such jobs but am reluctant to accept. It's a matter of personal comfort with that job setting, I guess.
Oh, by the way, I have a Masters degree from one of the top Canadian universities. The "problem" is... I did it abroad in its entirety, so employers don't seem to like that. It's ridiculous!
I wish you the best in all your endeavours