Complain

I want to log a complain about a staff member . he was supervising on the on the 4 of October. I went to Usave at mangalani at chiawelo to buy some food stuff and I requested for cash back should they said even on the kiosk the a customers who want cash back so he doesn't have. A cashier next to the till point I was standing call for authorise and came and pushed me . Im on crashes and he saw it when I ask what are you doing he just looked at me and went to the other side. Im very disappointed