I've worked in the same place for a few years now.
Its a chain type place with lots of stupid regulatory rules made by HO, but not something I can challenge, change or control (or anyone else in my workplace for that matter- including regional and general managers)
My career progression goes like this.
Position A( Where I started) Position B, position C and so forth.
I got to position B very very quickly, but haven't progressed at all, which happens, I get it.
But its the way I'm being sidelined that hurts and is really hurting my passion for this job.
For example, the first time the promotion became available, I went for it, didn't get it due to a internal superior candidate (fair enough and expected 100 percent) this was 2yrs back. 3 months after superior candidate got the job they were transferred out to another site. Job went up again,
Offered internally and externally (for application), Internal candidate from another site (But same brand) came down and filled the position. Weren't superior to me but oh well...
Then they left, 6 months later. I did the job for 6 weeks as a stand in at no pay rise or recognition formally, told I had a good chance of being kept on, then last minute a cock up happened with one of our other managers and HO filled both that managers role (it was a spectacular cock up that cost the business 10k, they needed replacing) but also the role I was standing in for, so again, I was sidelined :(
Then that person that filled role C left, I went for it. someone else from our brand (Who works in a totally different part, think chef v waitressing, which is essential to the other but absolutely not the same) went for it and got it as it meant same salary for them but working less (60hrs v 35). They thought they could handle it. They can't, they know it. But they can't stand down.
If they stand down it means going to position A, rather than back to their old position, which is a salary cut that they cannot afford having just got a mortgage at their current salary.
I'm constantly stepping in to stop this person from fucking us up, badly.
I had to come into work at 0 minutes notice (Got told basically fucking get here ASAP) because an official inspection was underway but this person had walked out there and then because they didn't know how to deal with it. I dealt with said official inspection and did well with it. Certain bits of paperwork need doing, this is falling to me, team training and new regulations that team needs to be aware of, falls to me. I have to do the weekly rota because this person does not have the time. They do not enjoy the job, they are openly quite miserable and want to be back in their old job. Today things came to a head when I rather unprofessionally threw a shit fit and told said new person that I shouldn't have to do their fucking job for them at 10k a year less. I listed off both of our job description, pulled out rotas, paperwork, some data etc and said come on then tell me what the fuck you've done for the duration of your job. What on earth have you ACTUALLY done? they then looked sheepish and admitted they'd done very little of their job role and that the things they do are closer to my job role rather than theres. They admitted they had no idea how to do half of the stuff I do.
I know, by now I sound a cunt. I know. But I don't mind helping out, I really don't , but theres a difference between x is short on time please help with this and x can't do this, please do it.
anyway. My outburst made said person go to the manager and explain, who phoned the regional manager and requested a transfer for said person.
Regional manager says no. Computer says no type response.
They can't transfer out. All they can do, yet again, is stand down to job role A which they won't do. but they're slowly and surely running the business into the ground. It hurts that I didn't get the job tbh but thats fair enough I guess I'd learn to take it on the chin if I wasn't doing their job for 0 recognition and 0 pay... To add insult to injury I fixed a stock loss of 1k recently and they got a performance related bonus of 4k for stock control... Cheers.
I tried to explain this to the regional manager but no not good enough, We're not allowed any more salaried positions, as if said person moved to another department onto salary then someone would need to step into their job and move from hourly to salary and then we'd have too many salaried positions (we currently have 4 
)
I put in a request for 2 weeks holiday. got it granted quickly and then gave my 2 weeks notice. I'm not going back. Since then I've had managers phoning to tell me they need me back, would I consider coming back please, I've made a mistake etc... aibu to stay long gone?