I've worked in a couple toxic MSPs. There was 1 guy who had been working there for 10 years. He was a 'senior' guy who was more intermediate and took days to w

I've worked in a couple toxic MSPs. There was 1 guy who had been working there for 10 years. He was a 'senior' guy who was more intermediate and took days to work on fixes that would take a couple hours for most others. Early in my time there I was given a client of his. I was working hand in hand with him. All decisions were bounced off him and agreed upon. The customer complained and when I explained to the boss that I had been working with him all along, he denied it and let me take the fall. Then another day, couple other techs were given a ticket to work on. They determined a new NAS needed to be deployed because the backups arent working. I was sent onsite to deploy a new nas; that's what I did. I email everyone involved including him, he was on vacation. He replies all but excludes me; and I'm told he took me down a notch and bad mouthed me badly. Mind you I just did what I was told. He then publicly in front of me told everyone that I was screwing over his client. So I replied instantly, "For the record, I was told to deploy a NAS. I did as I'm told. I did got above and beyond and see if I could get that vmhost back alive; I couldn't and so I agree with the techs who recommended a NAS. He did this kind of shit often to people; but he was the only person who could work on the internal network. The owners of the MSP loved him. He then got promoted to be the IT manager. This pretty much started the process of literally everyone quitting. Of note, right after he got promoted. There was another coworker who was beyond angry that he got promoted. He was flipping his lid and tells me that he is going to kill the new IT manager. I report this death threat and I got fired the next day. I was apparently the toxic one.