This is a thing that happened to my auntie, lets call her Ana.
Happened in Brazil, Ana applied to a job near home, a automotive workshop managed by an family, Ana was supposed to be an assistant but ended up managing the place, solving every sort of problem (yet receiving an assistant salary) but the owners were damned persons, they would fight, the husband would beat the wife in the upstairs office, their son would treat people like shit, including my auntie.
And the thing just kept getting bigger and complex, the family did humiliate my auntie for several years, the worst was the son. And she didnt quit, she stayed there during 15 years, being emotionally abused, humiliated, having her dignity throwed at the trash, treated like the dog turd flies (Brazilian expression, may not work in english).
She quits after an severe burnout, Ana has developed Panic, Anxiety, Depression, Traumas. She lives now laying on a bed, shaking, having nightmares, afraid of the life, the place destroyed her mind, spirit, the people were really mean there.
Dont let this happen to you, try to find a way, dont let em ruin your mental health, take care of yourself, YOUR well-being matters.