Horrific service

Hi there I would like to share a bad service I've experienced at Shoprite in mfuleni area Capetown today in 2hrs ago,the lady was helping me its zikhona,me and my boyfriend went there to buy electricity when we get there there was a loadshedding but the Store was still operating, we stand in the que by kiosk coz we wanted to buy cigarettes as well , that time you could see zikhona's face was not ok, she first shouted that people came for Lotto must come back when electricity is back than I asked her if are we going to be able to buy electricity, she never responded,i ignore that coz my boyfriend was the one Who was standing in a que,when we get to her we ask cigarettes and electricity she said they only took cash if we want to buy electricity,so we asked her what must we do now coz we've been standing In a que about 10min that time, she told us to go start line on other tills to get cash back and come back to her,my boyfriend did that, that time she was starring with me in a scary way,i asked her why you are looking me like this, she never responded instead she keep looking at me , we did cash back than we went to her again, this time she told us she won't be able to help us coz i had meter no in my phone, she told us we must get a slip, so we left Shoprite without buying electricity ,so what i want to know is this a best service you can give your customers, coz this is something happening more often in that Shoprite but sometimes you feel like let me ignore, as i see bad service is getting more worse there, first of all not always we will carry the slip in our bags now that I've got meter no in my phone but still no help, secondly you telling people that you only take cash for electricity but there's no even a written sign for that you stand in a que for long than you must go start another que for what? If this is a way you teached your staff to treat customer, think you need to do better than this,feel like they treating us like that just becoz we in a black township, no one deserves to be treated as ******* like that we are not a charity case we spending our own money as well,thank you will really appreciate your response as soon as possible, actions must take a place I'm also part of retail company as well i know the difference between bad and great service