Cashiers please respect us clients

I've always had the most wonderful experience at the pick n pay preller square in Bloemfontein until this morning a cashier decided to give me the most unwelcome service. They said her name is is lerato she was helped buy the other one to pack her name is khakhane. It's very unpleasant for cashiers to give negative comments to customers and attitudes. I hope the manager condems this sort of behavior as it will reflect back on the business. I use this pick n pay a lot and it's very convenient. The said said to her friend that rich people never check their till slip but the poor ones will surprise you and check it. I had bought electricity for 12k and it's my responsibility to check if everything is correct while I'm still at the till. Even if I'm poor why should I not check my transactions for accuracy.