wǒmen shì le hǎo jǐ zhǒng tújìng dōu méi liánxì shàng tā, zuìhòu shì tā zìjǐ dǎ huílái de

我们试了好几种途径都没联系上他，最后是他自己打回来的。

We tried several ways to contact him but couldn't reach him; in the end, he called back himself.