Bad service - Bluff Manager

My name is Zandile Luqhide. At work we started a stokvel from Bluff meat where I am stokvel member as well as my cousin sister who stays in Eastern Cape who I am responsible for her payments since she does not work with us. We been a members of this stokvel since 2011, So every year once we receive our stokvel cards my cousin mother travel from Eastern Cape to buy meat from Bluff since her daughter is working.(my cousin the member) Since then we never had a problem, every time I accompanied the mother to Bluff. Until the 09/12/2021 when we were by the till, and the stokvel card was not reading. The supervisor was called and they realised that who ever was updating the card did a mistake, the last digit number from the print out and the card was not the same. The supervisor told me, she is going to office to fix the problem. She came back to ask for the ID, it where I explained that the card if for my cousin and she is in Eastern Cape however I am traveling with her mother and we don't have her ID copy since it not Bluff requirement to bring one. But we can give them the Id number and they can call the her for verification . The supervisor went back to office, on return she told me that I should go to the police station and make an avdavit that I am not the owner of the card if incase my cousin cames to them and said her card was ******. I was shocked with they response because this would have not happened if Bluff did not make a mistake when updating the card. I told the supervisor that I am not doing that, she must tell the manager to come to me and explain this herself. The supervisor went and came back with the manager who has atitude toward me told me the they is nothing she can do for me I need to the police station and I explained that I am not willing to do that because the mistakes is on they side. She said I must leave if I dont do as she says and she will call security. She told the supervisor to unpack our trolley. She said she does not want to argue with and she left. I keep on standing there until a Finance Manager came to me and was useless too. I explain to him that the my cousin mother has traveled from Eastern Cape to buy the meat as she usual do and I am also the stokvel member of the same group. He told me that they will not assit me because it not my stokvel card they are proctecting my cousin. And I ask them from what? It was clear to me, that after all this years being loyal customer they dont give a dam are about us. And they saw me as a possible theft but they did consider that we facing this challenge due to they own mistake. To reslove the issue I had to incur cost and drive to fetch the stokvel main member so that the Finance manger fix they mistake. The main member who was at work and I had to wait for her until lunch time, while the mother was waiting at Bluff shop. Bluff supply meat, you have lost the customer I will never ever buy anything from you. You also lost the skovel club, I have share my experience with my stokvel member and their are mot pleased at all. The manger were not owning up to they mistake they keep on telling me that they don't have control of the cards of which was not my problem.