Rude behavior from the staff

I was at boxer today around 9am at an inside ATM netbank to withdraw cash send bcos the all cashiers said they don't have the money I requested, R1000. The was a lady in front of me who took forever to withdraw and then asked a young employee of boxer, Thapelo Percy to assist, they kept on inserting the card in and out for about 20min.Then I asked how come they take long is the any problem? , the young men rudely said " eish mama re busy why can't u go to other open atm's🤔mind u it's one NETBANK, 1 absa atm and I want to withdraw cardless cash on netbank ATM, then I said it's seems like you both need help because the lady was moving from atm to another, then the boy Thato Percy rep****, 'you will wait here as long a we are busy, who are you wena🤔" Mind you I'm old enough to this young man for him to respond to me in his rude tone,. As other customers on que begin to be agitated I asked for the Store manager by the name of Banda if I'm correct, an old African man, the stuff told me he is busy, I asked different staff members to call him but no luck I waited for 15min, then I bumped into a young men I forgot his name, he took me to his office of which he told the guy I was not supposed to be inside the office, fine the manager didn't seem to be interested and wanted to refer me to a supervisor, but came to front where we got together the respondent, Thato Percy, the younger man didn't even show any remorse and he kept on interrupting before I could finish my story. The manager said write an email coz I'm busy 🤔The manager went inside the office then this man continues to say "" gwa tswana olodirang with a smug face" meaning in English," you waisted your tym you can't do anything to me.