How do you deal with a coworker who thinks they know more about your job than you do without being rude to them?

jongreat46

So I just started at my company and I haven't been there for not even almost a month and recently I got a "promotion" and its a different position with a little more power than my current job duties but still the same pay. However, I never asked for the position and have never wanted it, the managers at my job just told me I would be training for a new job duty but won't affect my rate for my other position. So they just trained me and I started off this week in the new position but I have one coworker who loves to throw criticism my way and yes I know she has been there longer than me but I have worked long enough at other jobs to know that when managers make a decision, you don't question it, so today said coworker accused me of not being clean enough for her "standards" and presumed to tell me "I need to take off the pallets even when I am picking cases" and all I said was "I know" in the same tone and she got pissy and said "well I found two in other areas" and walked off with an attitude because I didn't take her crap and quit frankly don't care. If I don't ask for advice then don't give it and this is not the only time she has done this, she acts like this with all of the other coworkers but she thinks that just because she has been there at the company longer that it gives her the right to badmouth her other coworkers and be rude to them she gets mad when no one wants to help her. I am trying to be nice and civil with her but she keeps trying to egg me on and I am thinking about just going to management about it because not even my lead is criticizing my work and she tells me when I do something wrong. So if my lead and my managers are not saying anything about my performance she is just being judgmental in my opinion and is being petty when she doesn't know it was not my choice to get that position.

How do you deal with a coworker who thinks they know more about your job than you do without being rude to them?
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