Bed service

I visited cashbuild in Olievenhoutbosch plaza on Sunday to buy few things ,I received a terrible bad customer service from the lady by the name of Katlego ,this is not first time,I spoke to the manager first time about it,I believe nothing happened because I haven’t received any feedback and the lady still behave the same.So what transpired is that I went to her till to pay “i greeted her and ask if she is open for payment “her response was “I wouldn’t be here if I wasn’t open “I kept quiet.Then I gave her the code for the door because I couldn’t take it to the till and she said it wrong while sitting down and I asked her to come and check because I don’t understand how they’re code works,she said it’s not her responsibility.my questions was who’s responsible for that as I don’t work there and I don’t understand how they work.she started shouting,I will never ever do my shopping at cashbuild