Bad service

l am not happy with service l got from a cashier named KB at Jet home in Pretorius street near Steers. l wanted to purchase 2 grey rib succulent flower plants and they were on sale for R20.00 and l gave him R50.00 and he proceeded to ask for a specific amount of R40.00 as he claimed to not have change,but when l checked in his cashier bag,there was a R10.00 inside which eventually when he noticed,l had seen it,he then proceeded with sale and hen all of a sudden the receipt couldnt print out and mind you,l made it clear,it was a business transaction and the receipt was needed.l dont want to enter a store and feel like l am begging whilst l am buying.