I am having almost the identical issue with Capital One. Attempted a transfer on June 6 of 6k miles to Flying Blue - a minute later got a confirmation email and points were in the account. Friday, June 16 7pm try to transfer 366k once the actual flights I want opened up - STILL waiting, and I can see the transfer is "pending" on the Capital One side. Reps all say "in our system it shows processed" and there is nobody else they can transfer me to for help. They are coming up with all kinds of reasons (bank holiday, weekend, not a business day), which I find hard to believe as prior transactions were all instant. At least no flag/notices that there are fraud alerts. They did "open up a ticket" so a supervisor can review - hopefully miles clear before then, since it's "10-12 days" before anyone will even get back to me.