AITA for not letting someone cut in front of me even after they asked nicely?

It was in Xray room. Me and my mom were first in line then there are three teachers who we let to be in line first and then its almost 12 and another 2 teachers were behind us and asked me if they could be first before us because they are friends with the three teachers before us and they are in a hurry because they have job before 1 pm and its 12:30pm I said no because there's a line and we were in a hurry too. Do I sound rude? I mean just because they were teachers doesn't mean I give them a pass my mom is also senior citizen and I don't want her waiting for so long. And those teachers are young and can wait. Older than me 40s.
AITA for not letting someone cut in front of me even after they asked nicely?
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