4 sentences

1. 我听说你会拿到全额退款。

   wǒ tīng​shuō nǐ huì ná​dào quán'é tuì​kuǎn.

   I heard that you're getting a full refund.

   Source: OpenSubtitles

2. 这是你的退款。

   zhè shì nǐ de tuì​kuǎn.

   Here's your refund.

   Source: OpenSubtitles

3. 我收到了银行发来的退款入账通知。

   wǒ shōu​dào le yín​háng fā​lái de tuì​kuǎn rù​zhàng tōng​zhī.

   I received a notification from the bank that a refund has been credited to my account.

   Source: Dong Chinese Dictionary

4. 如果商品有质量问题，商家通常会全额退款。

   rú​guǒ shāng​pǐn yǒu zhì​liàng wèn​tí, shāng​jiā tōng​cháng huì quán'é tuì​kuǎn.

   If there are quality issues with the product, the merchant will usually offer a full refund.

   Source: Dong Chinese Dictionary