Rude Manager

I bought a iron at pic n pay. The iron was damaged leaking water and burning the clothes. I took it back to them in the box as my understanding ur box is your guarantee. When I spoke to supervisor fozia she took it to manager he came back to me not very gentle and said we can't take this back he never gave me a chance to explain the shop was full and he started screaming at me saying I can't expect them to change stuff and my 5 yr son was with me he got so scared of Marlon he hid behind me. He told me to get out of his store and took the iron from my hand and broke it further. I was shocked and disgusted and I turned to supervisor and told her is this your manager so she just said he is manager and I need to leave. When I left the store told him I would report him he said he doesn't care. When I got to my car my 5yr old son said mum that man was rude to mummy. I really am disgusted with pic n pay. My sis had same experience with this same manager. She said he was just as rude with her. This pic n pay is so convenient for us but the way this manager handles the customers I am utterly disgusted. I went to complain at pic n pay hyper ottery all they said there is nothing they can do.