Oh dude, I know that scam. In 2007 there was a posting to teach a rich Maylasian guys family and live with them in Singapore and offering $5000 US a month, so I sent an email introducing myself -- and the email was forwarded to me by a well known, reputable recruiter from Canada. I was an idiot and offered my resume and phone number in interest, and the employer DID call me on the phone the next day.
As he was talking to me on the phone, he was very commanding and even yelling at me in apparent frustration, trying to convey his message in broken English. And his accent wasn't Asian at all, it was an African accent.
When he started to raise his voice at me, I got scared and blacked out I think... I just wanted to hang up the phone.

I typed in his phone number on my caller I.D. online and it was infact a country code from Nigeria.

Bottom line, if it seems too good to be true, it probably is.