Poor customer service at Miladys in Mall@Reds

On Saturday the 4th January 2020 I went to the Miladys at the Mall@Reds, the door was half closed at 16:50 and the store is supposed to close at 17:00. I visited the store the previous day so I knew exactly what I wanted to buy. At exactly 16:55 the store assistant switched off the lights in the store making it impossible to shop however I already had 3 items in my hand and went to the till to pay for the items but was told by the cashier that the system was off. My husband complaint that it was not yet 17:00 and they must till the items after which they did so reluctantly. The store assistant was opening the door for us to leave after paying for the items but as I was going under the door she stopped the door from opening further and I bumped my head rather badly. It was really painful and left a lump on my head. The ladies in the store saw that I hurt myself through their negligence but did not even apologise. I am deeply disappointed with the poor service and lack of concern from the store assistants when I got hurt. It is disturbing to know that people who work with customers on a daily basis have absolutely no customer care s****s. Measures should be taken to ensure that incidents of this nature never happens again. I would like feedback on this complaint from Miladys top management.