I have been waiting in line for 10 minutes and someone cuts in line just in front of me...

Si yo llevo 10 minutos haciendo fila y alguien se adelante enfrente de mí, yo...

and I respectfully ask them to go to the end of the line.

defend & stand up for myself, its not fair. get them to the back of the line

i hold my anger inside

I say excuse me.

I tell them that I have been in line for a longer time and that they should go to the back of the line.

I would tell them that they need to get to the back of the line.

let them, its only one person.

so I tell them that I was in the line first and proceed to take my place in front of them.

tell them I was there first

voii y lo quito

amablemente le comunico que lo que él o ella hace no es correcto.

Cedo el campo.

le digo la fila es atras

le digo que la fila esta atras

le digo que sigo yo

le digo, que cree que esta haciendo?

me molesto y le digo...disculpe la fila va por alla...

Discussion

yo le diria que ese lugar no le corresponde y que la fila esta mas atras 

Lo miro de mala forma, le digo que la fila es atras