I received a 10,000 mile sign-up offer which expired on January 15, 2003. Then I received a 5,000 mile sign-up offer. I had to call around and be transferred to various numbers, but I told them (on January 31) that I had lost the original offer and just now found it (which was true). They looked up the offer using my name and address. There was no 800 number on the front or back of the form. Everytime I called the Citibank applications department, they told me the only offer out there was the 5,000 mile offer. Be persistent and you'll get the right number. I believe the American AAdvantage C.S. department gave me the number which was successful. So if any of you have an expired offer, try it anyway. Couldn't hurt, might help.