Good and bad

The service was good and bad 1st thank you to the lady who helped me with sending my paxi I think her name is sonto I ddnt check her name tag I just heard someone calling her. Then my reason for my bad review is the cashier Avile who was already annoyed with the customer before me which led her to not giving me good service n her being so distracted that they ended up treating me like some ******** with thuli when I explained that Avile never gave me back my R20 as u had given her R220 instead of R200 cz I had initially gave her R120 buying the paxi bags n she had scanned the R100 ones n I needed to give her R80 but gave her another R100 but she never gave me the R20 however when I explained to her that I'm supposed to get R100 as I gave her R220 she insisted she gave me R20 now I would have let all this go but bcz of the attitude I got it's the reason we are here as I was a cash up clerk where I worked previously n to do a spot check u count the money in the till not check the slip unless if that's how pep does it and the reason I said to her they must check the footage is bcz I was avoiding the back n forth however I was told some story about the footage so now how do we prove I was wrong or right without the footage but I'd like to believe that on her cash up tomorrow she will be over with R20 and she can keep it. I just want them to learn to be a little patient with customers cz service is important is its the reason we will continue shopping at pep