DD was late once when I locked my keys in my car and so had to wait for dh to drive back from work with his keys. But I rang at 8.30am to let the school know, and got there 5mins late.
We only wash pe kit half-termly. Doesn't smell (yet - dd in year 1, not sweaty, and not that much exertion).
I think that from reading your OP, the office staff are reacting to you a) being late and b) wanting to get your dd's pe kit at an unusual juncture (when couldn't she bring it out herself at the end of the day?).
I don't think they were rude as such. But obviously wasn't there.
Our office staff are lovely.