Very poor service

The cashier seared at me an was very rude when she rang up 8 wings and then I change my mind oto 10 wings but didn't want to. So I give her R100 + a R5. 00cion toive me R50. She claims that she didn't had notes but when she open the till to server the other customer I noticed the R50 notes Waiting period of 6 minutes for wings I end up waiting for 15 minutes there where a *** guy dancing on the serving counterAnd the manager did nothing