It will have been someone in the office. Seeing as "your" instead of "you're" is the norm everywhere now. I am not surprised about brung - although autocorrect doesn't like it
I agree dragonfly coming out of a school, to me, it is 10 times worse than seeing pear's and apple's for sale at discounted prices, advertised locally.
Before I retired I was a teacher in Glasgow and one day the classes were being called over the tannoy to have photographs taken in the assembly hall. I had a class of 14 year olds when one of the deputy head teachers came on the tannoy to request " Would class xx come tae the hall tae git thir photies took". Being a polite person I said nothing, the class fell silent, I glanced at them, they looked at each other and then at me before every single one burst out laughing. Including me!
Niobe, I'm sure you know the old joke about that lady teaching in the Gorbals in Glasgow who ignored the bell one day, whereupon a boy said, "Please miss, the bell has went." She replied, "No, it hasn't". The child replied, "I said, Miss, the bell has goed!"
Charliegirl she was , fortunately, not an English teacher. We did wonder how she had got her promoted posts but everyone assumed that her written Englsh was of a good standard. GrandetanteJE65 I've lost count of the times I heard ' Miss, that's the bell went!' from my pupils as they got ready to go.