Wish you all the best.... sounds like a con-job to me.
I've also received such phone calls, my first and only reaction is
- I am not interested - usually the caller is stunned for a moment,
seems that they do not know how to handle people who is simply not
interested in a "bait".
If you have to listen to a talk (the sales-pitch) make sure that
you can leave anytime you want, and that they allow you to leave
your mobile phone on. Also note for any loud music being played
when the sales-pitch is on.
If something is too good to be true, it probably is.
