What are 2 instances when a customer may not be entitled to their money back or a replacement product?

A customer may not be entitled to a refund or replacement if they change their mind about a purchase, especially in cases where the item is not faulty and the retailer has a clear return policy stating that returns are only accepted for defective products. Additionally, if the product has been used or damaged by the customer after purchase, this may void the right to a refund or replacement, as many retailers have policies that exclude returns for items that show signs of wear or misuse.