Utter scam - I was quite cheesed off to find that my name was given to one of these sharks when I joined Emirates, by a friend! The usual MO is that they sign someone up and then start hassling them for names of friends and colleagues that would also like to avail themselves of the same ripoff services.
Next thing you know some sharp suited DB who can't get a job in a real financial hub is round your place trying to sign you up to Zurich or whatever. I actually fell for it but luckily found a way out and got all my cash back (even plus a little bit of interest..). Luckily I realised what was happening fast - others are not so lucky.