https://www.mumsnet.com/talk/work/3583878-i-am-so-fucking-fed-up-re-my-lack-of-career?utm_campaign=thread&utm_medium=share
Just under three years in my "new" job and I've been promoted to assistant director and I've been sponsored to do an MBA. I'm earning 40% more than I did in my old job - with even better prospects ahead - and really very, very happy with how it's all worked out. My boss is an absolute gem.
If anyone is in the position I was - my advice is - if your face doesn't fit, just get out. Find a company that appreciates you. Don't fall into the trap of sunken cost fallacy. Don't expect an organisation to magically change to become the one you want it to be.