Clicks delft mall won’t do exchange for wireless headphones

In December 2023 I purchased bounce wireless headphones at clicks Delft Mall. I purchased using my bank card and clicks club card. The headphones only worked for 2 weeks!! Today I tried doing an exchange but unfortunately I didn’t have my slip I lost it and the reason is when purchasing the headphones I also purchased a few baby items / food and threw the slip by mistake. The manager of the store told me I can’t be assisted with an exchange because I don’t original receipt I suggested that they should do a look up on my club card and I could also bring my bank statement and she said she can’t assist she needs the original receipt. Last time I checked when purchasing an item the store will give a customer a receipt and they would also have their own copy in this case why can’t the store take their copy and assist me?? I don’t want money I wanted to do an exchange now I must sit at home with a faulty item which costed me R350?? TFG and Ackermans once assisted me with an exchange using store copy what’s difficult with clicks In assisting me I’m not happy with the service and the lame excuse they are giving me. The lady that assisted me the day of the purchase does remember me because it was 2 weeks ago when I did this purchase but they are telling me they can’t assist with the exchange they won’t do a transaction lookup with my club card and they won’t take my bank statement. The packaging is still good the charger is still the and the headphones are still in good condition it’s just that they aren’t working it’s an out of box failure I demand an exchange or I will take this to the ombudsman R350 is a lot of money. NB I don’t want the money I need an exchange for headphones that are WORKING!!