Mrs NWIFlyer and I had a misconnect on a UA itinerary from BWI-DEN-SEA in March, missing the last flight out of DEN. As we were subsequently involuntarily rerouted onto an Alaska flight the following morning, I wasn't entirely surprised when the flight didn't post.

I recently submitted all the paperwork via e-mail, had a holding response from the DC team within 10 minutes, chased up when the miles hadn't appeared after a fortnight and was told UA were failing to respond but the correction would be forced through two weeks after DC's submission to UA. That happened yesterday, and I got a confirmatory response from DC. The miles appeared in my account a few hours later.

I'd have to say you were either very unlucky, or there was some part of your submission that was incomplete (I have to admit I'm probably a bit anal in submitting absolutely everything - boarding passes, e-tickets showing fare class, invol reroute documents etc, so maybe this helps). In the relatively short time I've been a member, from a FB status match, I've found customer service from DC to be excellent. If you find the DC response unhelpful (and it probably is, to be fair), wait until you get one from Flying Blue!