Bad attitude unprofessionalism sarcastic

I took back my cyclo vacuum that I bought almost 6months ago due it being faulty.the salesman ****er told me that I abused the machine without even testing it out.he told me procedures that was not told to me when I bought the machine but nevertheless he said well there is nothing I can do but to send to service centre.I asked him in a very nice manner if I can speak to a manager as he is of no assistance to me and he has a attitude.I said to him I'm not leaving unless I speak to a manager.he then pressed the panic button and requested security to escort me out of his store.I have never felt so humiliated before and don't know why security was called as I didn't make a scene in the store.even the securities was shocked wen they came cause I was standing one side on my pH.they told him but he must help me he just said u can't get ur money back.I requested a refund because I bought a upright vacuum at verimark in game.but I don't think its fair the way he treated me and for making his own assumption and stating that I abused the machine.after I spoke to a manager I asked Nathier for his no please he phoned him and said the same customer is insisting on ur no wen I just asked him once