No cash float and I don't care attitude by staff

I'm here at Makharm store in Alberton city mall, I returned an item for R250, there say they don't have cash I must keep coming back to check, I asked them if you don't have cash float and expect client to keep coming up and down. The respond was is up to you if you want to come and go. I am deeply disappointed with such service, a big store not having a cash float for such, if you come and buy an item where do they get change? Can I get a service please urgently