to call or visit a possible customer to try to sell them something without being asked by the customer to do so

We were cold-called by a company offering savings on our phone bill. 我们收到陌生拜访，是一家公司说是要帮我们节省电话费。

In this job, you have to be prepared to cold-call. 做这份工作，你得准备好做陌生拜访。