Fraud From The Sellers Point Of View

 I am writing as a seller who recently was forced to refund money to a buyer in Sweden. After "careful review" paypal favored with the buyer who was asked (and gave) a tracking number for the item. After about a month paypal determined the item was returned and so they gave the 175.00 refund.... only I ner got a package. If they ask for the tracking number how can they prove it was delivered even if mailed from a foreign country or CAN they??? Mail is not delivered o my house, it goes to a box at the bottom of a mountain by packages are NEVER left there. I have to pick it up at the post office. Question is, have you heard of this and what can sellers do in cases like this, if anything??. Thanks so much for any advice you can give. Donna

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