No change for me to make a deposit, at a bank!!!

I needed to deposit R150 and I had R200. After queuing for exactly an hour, the teller tells me to go look for change outside then come back because she doesn't have change. She said I can come straight through after I get change I don't have Q. I asked her why must I be the one to seek change when I'm at a BANK to make a deposit and she said because I'm the one who wants to make a deposit and if I don't like it I can go get change then take a number on the Q again because I am rude and I have an attitude. Then she asked me to move so she can serve the next customer. I refused but she served the next customer anyway while Bakang(her colleague) was busy apologising to me but still telling me to go look for change. Which didn't help me at all because I'm still the customer who has to around asking for change so I can use your BANK.