Service with an attitude

Cash converters blackheath, I called ahead to see if baby items are bought, the lady did inform me that she is only a cashier but was quite sure they would. Apon arriving the buyer lady named Jabu, saw my items as she was walking around helping the customer in front of me, never said they don't buy. I got to take the items to the counter, she told me that they were not buying the items. So I explained about the cashier being sure, and she shouted at me, then she was trying to open an ice cream maker, instead of asking me to show her how to open it, she forced it open braking the clips. I got upset and she started bringing up the fact that I wanted to loan money against my laptop but I had not realized my son cut off plug. She insinuated I was trying to con the store.