What games are my bosses playing?

On Tuesday, I met with a female manager who is really getting on my nerves lately. She has given me work that 8 people ought to do and at the moment, I am about 2 weeks behind. I have told management this and they didn't do anything about it. I had the operations manager who I absolutely adore and love (well, adored -past tense) and they gave me a warning because 2 of my projects have now become delayed.

I was gobsmacked, shocked and appalled that they did this to me. I resigned and my male boss (operations manager) told me not to resign (in private) and told me to write back to my female manager and say that I will not be signing the warning and I listed many considerations and reasons copying him in. She didn't respond back. I went away and cried again. I went back to see him and tell him that I am resigning. He said that he is not going to accept my resignation.

Why the hell did he allow that dog to go through with it? What games is he playing?

What games are my bosses playing?
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