I just did a live chat with an AMEX rep as well. I passed the $30K spending threshold and I'm due 15,000 MQM's. He said he'd "open a ticket" on the tracker not updating. He also said that they've passed all of my spending info on to Delta and I need to contact Delta to find out when my MQM's will be credited. Sounds like he was just trying to close out the chat session.