rude very rude costumer care

so i bought 5 Gold air fans.on 9/10/19the then unfortunately they dont blow much air so i took it back for an exchange for bigger ones. unfortunately i missplaced the slip. but on that day a lady was willing to assist me ask for a few datails and we showed her proof of purchase from the app statement so she logged a call on the fans. a few minutes later the back office went office went offline so she couldn't assist feather she took my number n card details and said she would call. a week later no call i went to check was assited but a different lady her surname kekana with a bad attitude told me to go get a bank statement so they can track it. today i go with the fans and bank statement... to be assisted by a lady called YOLANDA so i explain my situation then she says" I Apologize FOR THE INCOMPETENCY OF THE STAFF MEMBER S WE WILL NOT ASSIT U WITH OUT A SLIP" after 3 attempts driving back and forth to be told this *******. so i left the fans for her to keep as the do nothing for me. why do we get different story every daY. game store kollonade am dissatisfied very very disappointed