Background.I started in my new job Nov last year however have worked at this company previously and in a different dept.
Since I started there's two guys who constantly play tricks in the office. I enjoy office banter but these guys are now doing stuff to me multiple times a day it is starting to really annoy me. I made a comment about it annoying me previously (first mistake) and one of the guys said "oh we're just getting started". Today they took my banana and placed it on someone else's desk, they took my security card and put it in someone else's PPE, I went for a meeting for an hour and when I came back they had removed the battery of my mouse and taken the usb from my laptop and placed it on top of my monitor.
If I raise it as an issue I feel like they will up the ante. I don't want to be seen as a stick in the mud but when shit happens multiple times I day I kind of feel like the target of workplace bullying.
I don't want to go to my manager just yet (but I would if it ramps up). I was thinking of saying to them I don't find it funny and to cut it out as one chance for them to stop but how do I say it firmly, politely but not be labelled as a fuddy duddy.
Help!