I got the BCE in December and the standard sign up bonus was $100 for spending $1000. I saw an offer for $150 on the BCE on creditcards.com . So I called into AMEX and asked if I was able to get the new bonus instead of the old one. They told me that they can not alter the bonus but they will credit my account for the $50 difference. Their customer service is awesome, glad i'm a card member.
That's classic. The offer is $100 back on BCE and $150 back on BCP. Good thing they didn't verify your claim!
You have to go through the pre-selector (name + address + SSN) to get that offer.