When you purchase items on ebay you agree to their terms of service which includes how disputes are resolved. The same is true for PayPal. If you don't follow ebay's or PayPal's dispute guidelines to the letter you can lose out. If ebay has closed the case and refuses to re-open it, then getting your refund through them is not possible. If you paid with a credit card, you can file a dispute with the credit card company. If you paid with a debit card, you can file a dispute with your bank. As a final result, you can file suit, but I don't know if that would be economically feasible based on the price of a phone.
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