I purchased an item on Amazon and I decided to return it. The company is in China, they said that they would refund shipping and the item once they got it. The tracking number I got doesn't seem to work. And I wouldn't be surprised if the company would pretend they didn't get it even if they did if I can't prove it without a tracking number. They've been a major PITA. Am I inputting the tracking number wrong? The tracking number is LC834962282US