What a nightmare! I feel for you. Group interviews sound like a joke. Like the company doesn't want to bother with one-on-one interviews, just have them all meet at once, then pick one or two of their favorites and scrub the rest.
I was at a job fair for a coffee shop chain once and it was very stressful. I managed to stand out and impress the managers thoroughly, but almost no one came out of there with a job, including me. In retrospect I'm glad that was the case. I was using this fake sociable persona the whole time and it would have been impossible to keep up.
There may be no worse career path for people like us than sales and customer service, but they're some of the easiest jobs to get, so it's not unusual to have some of them on your resume.
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RAADS-R SCORE:
163.0FUNNY DEATH METAL LYRICS OF THE WEEK: 'DEMON'S WIND' BY VADER
Clammy frog descends
Demon's wind, the stars answer your desire
Join the undead, that's the place you'll never leave
You wanna die...
but death cannot do us apart...