I think I need to be a bit vague so as not to out myself, but here goes!
I have been with the same, small company for 7 years now, from when I left college, up to now. My role has changed a lot whilst I've been there and I have recently taken an office junior under my wing.
A colleague of mine has been with the company for 4 years, has jumped from department to department in that time and has riled up pretty much every member of staff in the process. Constantly pulling people up on what they're doing (when said colleague hasn't got the experience or knowledge that other members of staff have) and essentially putting people on edge whilst in the office.
I have grown in confidence in the past year or so and feel happier taking on different duties and a more managerial role in said colleague's absence. When my colleague is in the office, I feel unable to perform to the best of my ability and am made to feel incapable and undermined. Whilst my colleague is older than me, they are not my manager but still feels that they can tell me what to do.
I have spoken to our MD about the issues I am having (about 2 months ago) but as yet, nothing has been done. He regularly asks me how things are and I am honest if something hasn't gone so well.
AIBU to be so bothered by this, or to be persistent in wanting something to be done?
What would you do?