Poor customer service ever

I went to Pick n pay at thabong on the 2nd of march and I bought a book on the shelves it was written R15,99 but on the slip I was charged R99,I took it back sametime and requested a refund,I ask for the supervisor and they told me to go to them and there was 3of them checking something on the computer and I ask for help,they told me to wait for another supervisor whom was with another client but I refused and told them to assist me because all 3 of them can't be fixing one query while I wait for the 4th one to come n assist me,then this supervisor by the name of Nunu Qou (I didnot know her name by then) came to assist me with attitude and she was arguing with the 4th supervisor in front of me which was very rude,I told her that she can see that person is busy with a customer and they will argue later,she assisted me with attitude,then I left. On the 6th of March I went to the same pick n pay at thabong,I bought groceries with a bank card and I was with my niece and we requested a R1000 cash back for his nsfas wallet ,the cashier Florah Magosa advised that she doesn't have cash and called the supervisor to assist,then the supervisor said they don't have cash and l told her she must look for cash as the cashier had Funds but advised that it was for the cash office,I told the supervisor I am not leaving without that cash and ask for the manager,she said she was the manager and refused to give me her name and she didn't have a name tag on her,we started argue and shouting at each other and she still refused to give me a name and she called another manager who advised her to give me her name which was Nunu Qou and I asked to speak to the manager above her and Morwesi Kelle came and she tried to speak to Nunu and she was very rude and busy shouting at me the customer and I was not having it and I told her were to get on,anyway Morwesi Kelle did assist me and really appreciated her service.I am not happy with Nunu Qou and I deserve an apology from her and she doesn't deserve to be the manager if she doesn't know how to handle a dispute and give us the customers an excellent service,I love Pick n pay and I have never ever experienced this type of service from Pick n pay in Sandton,Southgate,Lenensia(which is now closed) etc.I moved to the vaal recently and the Pick n pay there does not serve the same values as the Pick n pay as whole,I am very disappointed and disgusted.