他很忙碌地打电话给每一个客户。

Tā hěn mánglù de dǎ diànhuà gěi měi yí gè kèhù.

He was busy calling every one of his clients.

你有问题可以打电话给我。

Nǐ yǒu wèntí kěyǐ dǎ diànhuà gěi wǒ.

Call me if you have any problem.

那等一会儿我叫他打电话给你。

Nà děng yíhuìr wǒ jiào tā dǎdiànhuà gěi nǐ.

Then wait a little bit and I'll have her give you a call.