Rude manager from Oasis water

I had a very bad experience at Oasis kwaggafontein (kwaggafontein Mall) The manager there was rude, she was disrespectful, she was shouting at me from her back office, she didn't even to see me or come to the front to talk to me. She even told me I can go to Shoprite if I want... I left there in disbelief of how a manager behave in such a manner.