Understaffed and not willing to hire help, I was forced to work 6 days a week every other week as there were only 2 of us working 3 different departments. The lead receptionist left and recommended me for a higher position, which was denied because a doctor made up lies about my professionalism. I never worked with this doctor or communicated with them. Management then had the audacity to ask me if I would be okay with having my co-worker promoted to lead. My co-worker was consistently late, did not finish tasks, and would come in high off pain medication due to health issues. I gave my 2 weeks notice the day after management suggested this change.