I am new in a small town and am working as a chef. I quit a position at a different restaurant that was paying $55k and accepted a position closer to home that was an offer of Chef and $45k. Upon accepting the new position and starting, the restaurant GM

I am new in a small town and am working as a chef. I quit a position at a different restaurant that was paying $55k and accepted a position closer to home that was an offer of Chef and $45k. Upon accepting the new position and starting, the restaurant GM asked me to work as a cook until he fired the current chef (which was NOT what I was told at my offer and I have the text messages to prove it). The GM allowed the current chef to work for 2 weeks while still promising me that I will become the Chef. Rather than firing the chef, he promoted me to the position of chef and placed the former chef beneath me as my cook. In addition, the GM retracted his original offer of $45k to $35k ($20k less than the job I left). The work environment has become so uncomfortable with the former chef and other cooks who worked for him for years. The cooks have been aggressive towards me and they tell me that the GM has their back. The GM is trying to push me out of the restaurant and force me to quit while ganging up against me with the cooks because I complained about the environment he hired me into (hiring me as the chef when he still had a chef and changing the salary to #45k after I had already accepted and started). I would appreciate your advice. Will this fall under "hostile work environment" as well as "Promissory Estoppel" for changing my job/salary AFTER I started and quit a job where I was being paid $55k with full benefits (that he said I would have after 3 months). Thank you (sorry for the rambling).