Should I Переместить to another company?

As this has been Без ответа for 5months i'm very interested to know what Ты have decided on your own terms. Have Ты stuck to your old job или found a new one?
As for your original Вопрос there are many aspects that could be why Ты have not been promoted или moved to a different department when Ты have expressed interest. The most positive of these is that Ты are just too good at your job. Many companies see their work as pieces of a clock, when things are working just fine and as it should, they like to leave things as they are.
The other еще depressing aspect could be that Ты are just not qualified enough (on paper) или your boss(es) think Ты are just not capapble,
As a very up-front person, i always ask if there are any comments, tips или even some concerns from my employer about my performance every so often. When i started my new job that was monthly, which has now been changed to 6monthly if yearly as i have been with my company for 4years now. That gives my employer a chance to pick up on my best and worst and also gives me insight to what i can improve on.
There is no risk in asking for an assessment, it shows your are serious about your work productivity but медведь in mind Ты must take what they say seriously and if any areas do need improving take steps to actually improve them .
It could also be worth talking to whoever is in charge of training in your office/department to see if Ты can further your education in the company или learn new skills to give Ты that boost into promotion.
Good Luck.

Ask .
Why u was overlooked.
The worst they will огонь u.
U r worthy.
But do your own homework.
Go see the паук in the web.
Best approach to survive and understand.
But stay calm. Always.
Good luck.