Regarding your refund request, we need to verify the original proof of purchase before we can process it.

关于您提到的退款请求，我们需要核实原始购买凭证后才能处理。

同一单元的其他句子

• According to our return policy, clearance items can be exchanged within 14 days of purchase with a receipt, but are non-refundable.根据我们的退换货政策，特价商品在购买后14天内可以凭小票换货但不支持退款。
• If you are dissatisfied with the product quality, we offer a no-questions-asked return service, provided the original packaging remains intact.如果您对产品质量不满意，我们提供无理由退换服务，前提是商品保持原包装完好。
• There is a significant discrepancy between the manufacturer's suggested retail price and our promotional price for this product.这款产品的制造商建议零售价与我们的促销价格之间存在显著差异。
• We recommend that you carefully read the product description and warranty terms before purchasing to ensure it meets your expectations.我们建议您在购买前仔细阅读产品说明和保修条款，以确保符合您的预期。
• Due to rising supply chain costs, we will have to adjust prices on select items starting next month.由于供应链成本上涨，我们不得不从下月起对部分商品进行价格调整。