$9000! you can buy a 400e for almost that much (see classifieds). that must be a long list of repairs.
collect yourself before you talk to any MB rep and ask to speak to the supervisor right away (to avoid having to repeat yourself). find out who the gm is of the dealer and talk to that person, better yet find the owner!
don't lose your cool...
1993 300e-2.8 - gone now <sigh>
"Do not adjust your mind, it's reality that's malfunctioning"