Manager yelled at paid customer to return a half eaten pizza

I wish I could review it 0 stars. Ordered from the Table Bay Mall Debonairs branch. Our pizza arrived without the stuffed crust we paid for and came with an extra small pizza we didn’t order (which we made sure to return immediately). We called the branch to request a refund for the crust. They initially agreed to send the correct pizza and let us keep the wrong pizza since a few slices had already been eaten. We asked if they were sure, and they confirmed once more. However, when the replacement arrived, the driver asked for the original pizza back. We called the branch back to check, as we were told to keep the half eaten pizza. The woman on the phone demanded we return the original pizza -even though it was half-eaten. She was yelling at us. We then asked to speak to the manager - SHE SAID SHE IS THE MANAGER. She demanded that we “give her pizza back”. We returned the new pizza instead and requested a refund as we’d initially asked for, as it wasn’t worth being yelled at by the manager. She was extremely aggressive, yelling, disrespectful, and called us ****s despite four witnesses hearing her agree to let us keep both pizzas. She made the biggest deal over getting the half eaten pizza back. Makes me wonder whether they reuse old slices they’ve given to other people already??? It made no sense to be yelled at over returning a half-eaten pizza that was their mistake, let alone by the manager. If we wanted to get an extra pizza we’d have accepted the extra one they accidentally brought in the first place. We love Debonairs but we will never order from them again after such a poor experience.