. One time I did wave at her to turn her f**king volume down (she is support staff; I was on a client call) and afterwards she got well pi$$y about it…
Don’t know where you work but if you were senior to me and used the f word at me you would be on a warning. Tbf your attitude stinks as much as hers, your op makes you sound really arrogant so if thats how you behave at work she’s probably trying to wind you up.
All you can do is *politely* (I.e not the f word)? Ask her to keep the volume down, make sure she knows what your deadlines are and reiterate the need for quiet when on a customer call. I’d probably be sending around a general office etiquette memo to set out what is expected. It can go to everyone and not single her out but she may subtly get the message? I’ve worked with a pain in the arse before and the best advice I got was just to put them in a little mental bubble in my mind and block them out. It worked.