We apologize for the inconvenience you experienced, Ange. The small holes on the iron base plate of the cookware expose the aluminum bottom of the pot to the air. As a result, the exposed aluminum can oxidize and become discolored over time, especially at high temperatures. However, we have a some helpful tip for cleaning the oxidized aluminum. Create a paste by mixing baking soda with water. Apply the paste to the oxidized aluminum surface and let it sit for a while. Then, using a damp cloth, gently wipe the surface before rinsing with clean water.

We are sorry the cookware set did not meet your expectations, Audrey. Ceramic coatings can also form a protective film through seasoning, following these steps: 1) Thoroughly clean and dry the pan to ensure no residual moisture or stains on the inner wall; 2) Turn on low heat to dry the pan, switch to very low heat, and evenly apply a thin layer of cooking oil to the inner wall (it is recommended to use heat-resistant oils such as rapeseed oil or corn oil, avoiding easily oxidizable oils like olive oil); 3) Maintain very low heat for 1-2 minutes to allow the oil to fully penetrate the coating pores, then turn off the heat and let the pan cool completely; 4) Pour off excess oil and wipe off surface floating oil with a soft cloth (no need for thorough cleaning). The non-stick performance will gradually recover during subsequent cooking. If you are still unhappy, please contact Member Support team at (888) 301-0332 and they'll do their best to make this right for you.

We are sorry the set did not meet your expectations, LESLIE. Please know it can be returned for a full refund with the Member's Mark 100% Satisfaction Guarantee. You can contact Member Support at (888) 301-0332 if you need assistance.

We are sorry the cookware set did not meet your expectations, Jessica. If you would, please contact Member Support at (888) 301-0332 and give them a chance to make this right for you through our satisfaction guarantee.