Mazda refusing to pay for new parts

I bought a Mazda 2 Dynamic 2021 in August 2021. Beginning of this year the car has been giving me problems. At first I was told it’s the injectors, they had them cleaned. Second time they said they couldn’t see anything. This is the third time now this year, they’re still saying it’s the injectors and they need to be replaced. The branch app**** to maintenance since the car is still under warranty but they refused to replace the parts, instead they said they should be cleaned AGAIN. They can’t take the car because I have a shortfall with my financing bank and they are quoting me ridiculous prices for a new vehicle. I’m frustrated and feel unsafe because the car just stops anytime, anywhere.