Why do some Shona people hate speaking english?

I went to Harare for the firsf time in 2023 and I swore that was the last time I ever go there. I met very rude people there yoh! I remember we went to Makombe buildings and one of the guys came over there and he spoke shona. We told him we don't understand in english and his response was " I'm in my country ..."and he proceeded with shona. Like??? How does a govt official say that to people?😪