Rude treatment from Khayelitsha super spar staff.

Isn't suppose if the shop operates 7am to 7pm,that means they should be rolling down the doors at exactly 7 o'clock but what a bad I was given by the security telling me that at 18:50 they stop allowing the customers from entering the store & that was exactly 18:50.I asked for the store manager but she never showed, instead that, 1 of the securities asked me what I wanted to purchase & I told her that I'm fine whereas I was very angry with the way they treated me...