Owner of Franchise not respecting clients

I shopped while there was loadshedding,and when I got to the till the loadshedding was over and the tills were busy restarting.As I patiently waited for the tills to restart the \client"after me ordered every passing by supervisor to collect groceries for her.Then it is for coffee then this and then that which was very annoying because she shouted all over my head and pointing at them.It took a while for the tills to restart and she then shouted at the cashier why is she taking so long to open.I do not know if she knew about the loadshedding so I said to her that there was loadshedding and that the tills are restarting when she shouted at me that I am not her mother.After exchanging words she shouted at me in a very busy shop that she is the owner of this Franchise and who am I to talk to her like that.She is an immigrant and has now manners or people skills to customers or employees.I ask you to please look at the video footage of this till and investigate.She is blonde with a very harsh voice.I am not happy with her attitude in front of other customers and I shop in this shop every day and have a good relationship with all the employees.Date***8"