New job making me crazy

I recently started a new job where I make a base salary and can make a commission by bringing in new cases. My state laws say that those in administrative roles that make commission are not eligible for overtime pay.

So in my interview I asked specifically about working overtime hours.. and I was told that people really only stay late about once a week and not more than an hour tops ... now that I’m in the job I’m realizing I was completely misled.

No one takes lunch... and the work must get done daily and no one can leave til it’s done. I’ve been there 2 weeks and I’ve stayed more than an hour late 7 out of 10 days... And the only reason I didn’t stay late the other 3 is because I was still training and wasn’t able to help get the job done. I also double checked with my boss about putting the hours in my time sheet and she said I can’t. The normal work day is 8.5 hours and you get paid for 8.. but I’m working 9.5-10 hours and only getting paid for 8.

Idk what to do. 😣 yesterday I had to stand up and tell everyone I had to leave bc I had a dinner reservation bc it was my birthday and I felt bad but I shouldn’t have to miss my birthday dinner if I’m not getting paid for it.

Advice anyone ?