2 sentences for 致电 (zhì​diàn)

1. 如有任何疑问，请致电我们的客户服务热线。

   rú yǒu rèn​hé yí​wèn, qǐng zhì​diàn wǒ​men de kè​hù fú​wù rè​xiàn.

   If you have any questions, please call our customer service hotline.

   Source: Dong Chinese Dictionary

2. 获悉他当选的消息后，各国领导人纷纷致电祝贺。

   huò​xī tā dāng​xuǎn de xiāo​xi hòu, gè guó lǐng​dǎo​rén fēn​fēn zhì​diàn zhù​hè.

   Upon learning of his election, leaders from various countries sent messages of congratulation.

   Source: Dong Chinese Dictionary