If you have received a product that is noticeably cheaper or completely different from your original order, it is advisable to obtain a copy of the tracking information from the post office. This document typically includes details such as the delivery address and the weight of the item, which is often lower than the weight of the item you initially ordered. Sharing this information with your bank, credit card company, or PayPal can greatly assist in securing a refund. Many individuals who have provided such information to their financial institution or payment service provider have successfully obtained full refunds with their assistance. Taking these steps will help protect your interests and increase the likelihood of resolving the issue satisfactorily.