I just tied over the phone and can confirm that it doesn't work. Do u have any other ideas of how I can obtain the 100k Amex platinum offer. Thanks
On a business card it's easy, her is my experience, I called them up
Me: Hi, I got the 100k offer in the mail I just wanna ask you bla bla
Amex: Answers my question, so what's your RSVP code?
Me: Oh, I don't have it on me, I'll back latter
Amex: I can get it for you, what's your business name?
......................... Approved!
You can try the same with the personal however, I don't have any experience with it.
ETA: If you want a 100k for 10k spend (business), I have a few of them.