Checkers cashiers with an attitude

Today was my third day going to Checkers in the Pavilion branch wanting to withdraw money from Nsafas and all the cashiers were giving me an attitude. Today I was served by a lady she was Xhosa and has straight back pleated hair she told me so rudely I don't have cash whereas there were two people in front of me who paid with cash which was more than the amount I required. I always go in the afternoons because I'm also in the retail industry and I know in the afternoons that's where we have enough cash. I asked her to ask other tills and she said I can't you hear me I dont have cash. It can't be that 3 days in a row the whole store doesn't have cash and it should be the cashier who asks others if they have cash because I as the customer can't be joining every que just to find out if they have cash or not. I'm am not pleased with their attitude.