Renaul kiger

Good day, i have purchased a Renault Kiger 2024 brand new last year in March. I have been having problem from the first month of purchase, i have been to the dealer for more than 6 times since i bought the car, i don't sleep at night because i need to switch the car on after every 5 hours and yet they tell me the battery life is 100%, this car overheats the coolants boils like its a running kettle, this car has the most uncomfortable sounds on the engine I'm even scared to drive over 80km and I'm always using the closest line to the yellow lane. I JUST WANT A PEACE OF MIND , RENAULT MUST JUST TAKE THEIR CAR. IF ANYONE WANTS TO BUY A CAR DO NOT GO FOR RENAULT, THEIR SERVICE IS JUST BULL**T THEY WILL TOSS YOU TO AND FRO, THE DEALER WILL SAY CALL CUSTOMER SERVICE AND CUSTOMER SERVICE WILL SAY GO TO THE DEALER. I can't even get anyone to help me sell this car.