Samsung warranty doesn't want to pay microwave repairs

Samsung warranty is refusing to pay for a broken microwave. Reason being i cannot produce the slip, i lost the slip, my purchase was done on 2022, the shop is supposed to have a slip but guess what, just like me @home store has lost my slip. So how is this a me issue? I bought the microwave using my tfg account, so tfg statements have the transaction and my account has the transaction, i sent that as proof but they are refusing, to top it all of, the Samsung website has a warranty checker, and using my serial number, I'm able to see that my appliance is still on warranty till march 2024. Now they have sent me links to sent my appliance to assessment, after sending it there, the SSS Cellular says if i wont be repairing ill need to pay an amount for them doing the assessment., now due to them encouraging me to do this with one of their repair centres, why send me there if you not going to pay???