2 sentences for 返还 (fǎn​huán)

1. 捡到失物后，应当及时返还给失主。

   jiǎn​dào shī​wù hòu, yīng​dāng jí​shí fǎn​huán gěi shī​zhǔ.

   After finding a lost item, it should be returned to the owner promptly.

   Source: Dong Chinese Dictionary

2. 多收的款项将通过原渠道返还给消费者。

   duō shōu de kuǎn​xiàng jiāng tōng​guò yuán qú​dào fǎn​huán gěi xiāo​fèi​zhě.

   The overcharged amount will be refunded to the consumer through the original channel.

   Source: Dong Chinese Dictionary