I WANT A REFUND

Bought A superchef in June 2022, used it 6 times and it stopped sealing and the valve broke off. Tevo says the valve is repaired and it works. It doesn't work, takes 45 minutes to seal, this is not the point of a pressure cooker like this. I send it back the second time, because I don't want it. They tell me I must make sure it's assembled properly. Why don't TEVO come to my house and cook for me then? I WANT A REFUND