Consumer Protection Act Article 19-2

When consumers make notification to traders to rescind the contract in writing according to the first or third paragraph of Article 19, traders shall retrieve the goods onto the premises of the original delivery or agreed between the parties within 15 days from the next day of receipt of the notification, except for parties have agreed otherwise by individual negotiation.Traders shall make refund within 15 days from the next day of retrieving the goods, receipt of returned goods, or receipt of notification to rescind the service contract.After rescinding the contract, the restitution provision shall be null and void if it is more adverse to the consumers than the provision prescribed in Article 259 of the Civil Code.
中文原文 消費者保護法第19-2條
消費者依第十九條第一項或第三項規定,以書面通知解除契約者,除當事人另有個別磋商外,企業經營者應於收到通知之次日起十五日內,至原交付處所或約定處所取回商品。
企業經營者應於取回商品、收到消費者退回商品或解除服務契約通知之次日起十五日內,返還消費者已支付之對價。
契約經解除後,企業經營者與消費者間關於回復原狀之約定,對於消費者較民法第二百五十九條之規定不利者,無效。

English translation for reference only; the Chinese text prevails. Not legal advice.