Do You Always Want To Be A Winner?

Let's start with this conversation:

some issue in the operation today, a manufacturing engineer wanted to discuss the issue with the QA engineer..along the arguement:

story 1:
mfg: " i have sent out the email a few times to ask for checking"
qa: " what email??? everyone job responsibities is different, my job is not to check ur email lo!!"
mfg:" .....................then in future i dont sent email lo..." --> she is the "winner"

story2:
mfg:" i found some differences in the measurement method among qa auditor and mfg operator, can we get align on this?"
qa: " because my auditor hand is short ! so they cant use the method same as mfg ..."
mfg :" ......................nothing to say..."--> she is the "winner" again..

story3:
mfg: " if your auditor judgement is failed, but i myself verify it it's pass..can we discuss about this?"
qa" NO!! QA is always right, we are the king !!.."
mfg:".........................." (wtf...ya..she is the "winner" again)

end of story...can you imagine everyday i need to deal with this kind of people???..wtf..
i wouls say my EQ is improving, but sometimes really cant take it..just dont want to arguement further and walk away...

i cant get well along with my boss, i cant deal with the supporting group...everything just make me think i am not suitable to work...it's torturing!!!!
save me from hell !!!!