I wanted to let you folks know that apparently, whatever was done to address the 'whoops, letters never get answered' problem hasn't been fixed.
I've sent a few more letters into Marvel's black hole.
The handy letters to your vendors were also included when these were sent.
May want to work with your brush-off/fan mail/form letter department on their responses.
-me
(who is getting grumpier and grumpier when ignored again and again)