On California Zephyr in economy bedroom(in crew car which I dislike for various reasons)the following occurred:
-the interior locking mechanism malfunctioned(after already being brought to attendant's attention)and kept me locked in, and
-the temperature elevated about 10 degrees, I estimate to high 80's F.

Yes, anxiety and discomfort until knocking loudly in early AM hours brought someone to open from the outside. Mentioned to new conductor(they ususally work 6-8 hour runs): his response; "I know it didn't get that hot in there 'cause it didn't get that hot down here(ref to crew work area, below)." and "you just don't know how to work the lock."

I did not mention nor show him my past tickets(in bedrooms)for all Amtrak routes multiple times-he was hopelessly unhelpful and confrontational.
No referral to CR as it was "train from hell," with one sleeper completely contaminated by backed-up sewage system(and attendant smell), as well as rerouting out of SLC requiring the presence of freight conductor on-board.
Yep, confined space(no apparent escape)and discomfort due to heat=anxiety. Mod: feel free to share in Amtrak forum...