Samsung Fridge

My sister bought a Samsung twin cooling plus fridge in 2020 and the fridge stopped working, 4 years in. I called them December 2025 to let them know about the problem I have with the fridge, they sent their technicians and had a look at it, and I paid for their service. Still the fridge wasn't working even after that, I called again to let them know that they came here to fix the fridge and there was no electricity, so they couldn't test to see if there's any other issues with fridge. After that complaint, they came to try and fix it but said I still need to pay for the flush and regas, they are not taking the fridge to fix it and give it back when it's working and they keep asking for more money for their services. Mind you the compressor is under warranty!