I recently ordered two MyPoints certificates for Marriott miles, and sent an email to their customer service asking how long it would take. I politely explained that I needed the certificates to claim a Marriott reward I had been planning. I received an email from customer service stating that it could take 6-8 weeks for the certificates to come, but I got them about 3 weeks later, sent them to Marriott and had them posted within 3 days. Claimed my 714 award, and am in the process of getting a 713.

I may have been lucky, but I would suggest a follow up email to customer service (with a polite pleading!).