Hi Pekin,
I did a lot of research, before giving up my money, these guys were very good in 'scamming' people, please also read my post # 1411, I have noticed that a professional looking web site does not mean much and that you can check how long they've had the website. If its a year or less, stay well away from them.
You can also ignore their phone calls, which is what I'm doing currently until I change my contact number.
Ask them who their company is registered with and confirm this your self, most of all checkout the Escrow agent, get their contact details phone them and email them to confirm they exist, then checkout they are registered with a professional association and that you would be compensated if things went wrong. Do thorough due diligence.
If you live in Canada, pop down and see them, if you still want to go ahead, arrange everything via your own Escrow agent, get them to checkout the company and the legality of their documents. I personally would never trust any person or company that have contacted you without you personally requesting them to do so.