Balance in everything but this - Junior Account Manager Balance Me Employee Review

The role I was hired for was not as advertised. They advertised a junior role but in reality the business needed (or wanted) an executive or director level role. Trying to manage the 12+ accounts on my own without any support or guidance, with a boss who spoke to me (in front of others) in an underhanded, dismissive, and derogatory way caused self doubt in my abilities, which caused stress and overwork, which was quickly leading towards burnout within just four months of starting. When a family member passed away early on when I joined, I was not offered any bereavement leave. When I tried to book holiday, I was told to change my dates despite no communication from my boss before hand that she was planning to take time off at the same time -- even though there is a joint calendar for everyone to put in their holiday/time off in. We are not told until the day of when upper management is unavailable either due to holiday or business trips. The goal posts keep changing without proper communication from upper management and we are all expected to just adapt and help out without consulting us on what we have scope to take on. There are hardly any if at all acknowledgement of achievements accomplished and whatever is completely is not given the positive feedback one might expect from getting it done, even if helpful and constructive critiques could be made. 10/10 would not recommend working here. Hearing early on that the company has a high turnover should have been the first red flag, but after coming out from working at somewhere else where I had been overworked and underappreciated I could not see the signs until it was too late. Additionally, the people doing my interviews did not know or understand the full scope of what the role would need, which leant itself to the false promise of achievable workload vs. the businesses expectations.