Originally Posted by jonman21

If you did $10K spend in 4 months for 50K MR points, I'm assuming then you have the AMEX Platinum card... is that right?

If so, that's probably the reason why you were rejected by the agent. I doubt you'd be able to get it applied even if you tried calling multiple times.

This particular offer (5894) is only valid for AMEX Premier Rewards Gold cards. You'd have to apply for that card under the current 15K or 10K MR point bonuses, and then ask to be bumped up to the 75K offer.