I started a new job 9ish months ago into a small team of 6. Internal promotion came up which I got and due to start role soon, delighted etc.
One colleague I suspected was not happy; he has been there a year longer and I suspect felt the job was his.
Very long story short, kicked off via our work whatsapp group this week specifically at me. He had been off a week and objected very strongly as to how incoming work was work managed whilst people on leave - as I was the only one in, it's me.
The messages basically run along the lines of - i've worked here for 2 years, I'm better at this job than all of you, I'm not changing anything because everything i do already works, if you have to work in such a such a way you're not doing your job properly. and on and on.
Think more aggressive and hurtful, and really disrespectful, not to mention unprofessional.
I specifically asked in the messages to stop, I also rang him as soon as they started but no answer. He continued messages into the next day, basically laying into me both obviously and passive aggressive comments about work I had done whilst he was on leave. Actually not very passive, more direct than that.
I made one comment in relation to starting my new role to which he answered 'IF you start it'. This has sort of cemented in my mind that he is really pissed off bout me getting this job.
It also continued in a meeting with an external agency; if I had said black he would have argued it was white, if you get my meaning - he contradicted me several times when I was giving a factual update, stuff which is fact!
I have a really low tolerance for this kind of behaviour having been bullied at work before, but I don't know what to do. I will be team leader in a few weeks and have some supervisory responsibilities but at the moment I don;t know if I should speak to manager.
Or if I'm overreacting given being sensitive to this kind of behaviour.
So as not to drip feed, I wasn't allowed to tell anyone about the role once I got it until it was announced last week; I was told work 'needed to sort colleague out first' which makes me think even more he kicked off when he didn't get the job. I've basically felt I've done something wrong since I got it.
Help. Dreaded getting up today incase I came into more. I also feel like I need a handle on it given that I will have a more senior role soon.
I feel sick about this.