I Knew I was working for a terrible boss but I have proven that I was a good worker. Right before I was fired, I worked 17 days in a row giving up my days iff to help out my coworkers. The day I was fired, I was scheduled to work 6am-11pm because I had to go to my drill weekend. An hour before I was to leave, he asked if I could stay a little longer. I said no for the first time. Right at the end of my shift, he grabbed me to cone with him to HR and I was fired for failure to meet expectations l. I asked for specific expectations that I failed to meet and that it wasn’t because of my work ethic.They did not give me any. I finally got a new job. I still was ticked off that I was not given a specific reason, so I went there to talk to my boss and he still wouldn’t give me any. Would it negatively affect my future employment with companies if I send him a very derogatory text. I feel the need to tell him off.