I am facing a similar kind of situation. About 10 days ago I made my first MFU booking over the phone. Outbound to SFO in WT+ and then using miles to upgrade to club on the return leg from PHX. For 3 pax this was 37.5k miles. However they have never been take from my account. I followed the advice from 'xxxxx' and there appears to be ticket numbers listed on checkmytrip.com, and they have charged my AMEX correctly. I would quite like the peace of mind that clarification would bring, but am also aware this would mean surrendering the miles, the honest thing to do i suppose!! Can anyone foresee any problems with my booking if I just sit tight and hope they never take them?

Cheers.