Poor service from the Cambridge Food Store - Mitchell's Plain - Symphony Walk

Poor service from the Cambridge Food Store - Mitchell's Plain - Symphony Walk. I purchased a kettle on 27-mar-2023. When I arrived home from my working night shift my mother had already purchased a kettle that was used at this point. I went to the store today 29-03-2023 at 08:20 am to get a refund or something else in the place of the kettle. I spoke to the manager on duty and from the start he was extremely rude before I could even explain what had happened he cut me off and said hus not going to help me and that the store policy is that not items can be changed or refunded. I asked him to see this policy and he said ''I am telling you now that is the policy"' I asked him where in the store or on the receipt is this policy printed ajd he just kept on saying his telling me now. There is no policy printed in store or on the receipt that refunds or exchanges are not done. I asked him if I can take something else with the money and he said "I'm not going to help you and I'm not going to argue with you about this as I already told you I'm not going to help you''. Mind you I was calm and did not raise my voice I just wanted to know where this policy is printed which the manager could not show me. I have the receipt and the kettle was not even removed from the box. The cashier that assisted me also did not say that the store has a no refund or exchange policy.