We're sorry the set didn't meet your expectations, Windis. Our cookware is equipped with a stainless-steel stay-flat base specifically designed for use with induction cooking surfaces. It is important to ensure that the diameter of the pan’s induction base is equal to or larger than the size of the induction element being used. Otherwise, the induction sensor might not recognize the pan and therefore not activate the heat evenly. Please know you can exchange or return the set anytime with the Member's Mark 100% Satisfaction Guarantee.