Wasn't sure on the correct flair or what subreddit to post this on, but something has been happening at work that I need advice on. I'm so sorry if I'm rambly and all over the place, but I'm just trying to get any context/backstory that might help everyone see what's going on.
I work in a grocery store meat department. Have been there over ten years total. I was a clerk, cutter, assistant manager, and now as of a few weeks ago, a meat department manager. Three quarters of my time there has been mostly fine.
The past two years was rough. I made assistant a couple years ago, and had a few lazy department managers right in a row. They were all older guys that have been in the company meat departments a long time, and I couldn't get anyone, even the district manager, to take my side on how much work they were leaving me. The most recent one walked out after I called him out on leaving literally all the cutting and truck for me.
During this time, a girl who used to work in that meat department (and was the one who actually first trained me), stepped up to store co-manager about two years ago. And every concern I brought up to her was kinda shrugged off as "well, you know these old guys", and she would go back and buddy up with them but go hard on me for not having things done. She would also tell our clerk/cutter to do completely different things than what I would ask him. He is someone that she's friends with outside of work, too.
I brought these concerns up to the past two store managers, both just told me to not worry about it and I was doing good.
After the most recent meat manager walked out, there was a four month period where they weren't posting the job for some reason, and my cutter and I were both working overtime. Everything between those two calmed down, and the job was tiring and stressful, but somehow easier at the same time.
Our newest store manager just got there about a month ago, I put in for meat manager when he finally posted it, and I got it within a week. My cutter stepped up to be my assistant. Now, only when I'm not there, is the co-manager is back to coming back and ordering things that dont sell and telling my assistant to do completely different things than what I'm asking (I can provide lots of examples, like me asking him to prep sales items, but after I leave she takes him out of the department to work in other departments with her). She's taking pictures of a few things I missed and sending it to my district meat specialist without confronting/asking me to fix it first. And she keeps having my assistant relay critiques to me, even after a day I worked with her all day and heard nothing.
The other day, before my current couple days off in a row (which I really needed to cool down), I asked every other department manager (grocery, bakery, deli, dairy), if their assistants ever come up to them and tell them that the co-manager had them do something other than what they were asked. They all said no.
So this has been basically going on like this for a couple years now. I haven't gone to our newest store manager about it yet because he's been in another district for a week, then was on vacation, but he's back in a couple days. And like I said, everyone before him has told me to just ignore it, but it's mentally wearing me down. I've never worked in any other company before that had someone do this. I've never helped in another meat department where any manager came back to undermine me when I wasnt there.
And I've asked her about it a few times. She brings a witness into the office with me, and tells me she never goes back there and does any of that.
Any advice on the next few steps?
Edit: lots of grammar errors, there's probably a lot more, I wrote this stressed and burned out