i'm not convinced the OP is without blame and just tries to shove it onto them.

"Also, "We aren't going to argue with you on this point.". How old are we, 12?"

i could argue that a 12 year old loves to argue about how unfair things are and how his demands have to be met.

I'm with whoever wrote this part. He saves everyone time by outright saying that there is no point in it. That's a more mature thing to do, actually.

Arguing around is, in absolutely most cases, a collosal waste of time, because people usually aren't interested in learning or understanding something, but in "being right".

What i find bad, though, is that they wasted OPs time. That being said, we actually know pretty much nothing about the whole situation and there is reason to assume that the OP just wants them to look bad.