Staff members don't wear masks and refused to open the doors for me

I went to buy sone bedding at mr price home on Saturday 14 August 2021. The stuff on the mr price home side was very helpful however it was like 17:45pm and most of them didn't wear masks. After i paid my stuff on my way out the doors were already closed. So i asked the girl that was close to me at the exit to open the door for me. The rude girl shouted at me saying I must go to the back of the store to get the person who helped to come and open the door for me. After asking here why she can't do it for me she start telling me we are not one store thats why. So i loose out and i asked the other staff that was also not wearing their masks at the mr price sport till points to assist. They say the girl i asked first must open for me they also can't do it. I end up waiting there for several minutes