Bad customer service from a guard to management

I when to discount store @ main street Johannesburg gundi square to buy stuff the security guard told me I must leave my laptop and expensive textbook book by the parcel counter, I went in and the manager said if it not groceries I can go it and as per went out da stupid pupil who tick receipt told me i UST go out by da entrance where the guard who refuse me go in was sitting, I went the and the fat guard was swearing me and he even put me inform of his superior and he then told me I must go out by the exit site. He call be ***** infront of his superior nothing was done to him. I went to buy there so that they can have income but they don't have customer care they treat people as if they came to buy on credit . please assist I could not believe the are still stores who does not value there customer. I'm furious.