I am a teacher at the same school my child attends. The principal reprimanded me for contacting the district

I was concerned with temp of A/C in my kid's room. The teacher had asked for it to be looked at multiple times. So, as a parent, on my own time, on my own phone, I called the district and told them I was a parent of a child in that particular room, and that it always seemed hot and stuffy. I did not identify myself as a teacher. The district immediately sent out someone to check the air (they said it was within normal range, so at least now I know) and they told the principal my first name. Princ. immediately figured out it was me, not that I was hiding anything, since I was calling as a parent. Prin. hauled me into office and said I did not follow procedures and protocol and I made an entire work crew stop what they were doing to come check air. I told her I called on my own time as a parent, she said there is no such thing because "you never really take off your hat as a teacher." ? I went to bat 4 my child, as a parent. Was I wrong, or is boss wrongful in censoring me?