Makro carnival poor service

Second time being humiliated by cashers at Makro carnival, i went to buy some items late around 17:12 in the afternoon, as i was about to pay, the casher says she does not have change, i as a customer i asked do i have to go find my own change and the lady sends me to another till, as i get to another till, the second casher says to me she also doesn't have change and I have skipped the que and she calls another customer, which is a Makro employee. as frustrated as i am because i want to buy and leave, i voiced out my concerns on her and she tells me she has no time to deal with my frustration. shouting telling her colleagues, i can report her if i want to, Infront of Makro supervisors. Do customers have to find their own change at the store Makro carnival?