What does telephone customer service do?

If it is a sales company, then telephone customer service is to sell products by answering the phone, with performance promotion and performance evaluation.

It can also be called "telemarketing"

If it is a service company, then telephone customer service is to accept customer consultation and after-sales service. And other services, such a job also has a performance appraisal, that is, by calling guests to assess your work performance.

To put it simply, it is to ask you questions by phone, and he will answer your questions and help you solve your confusion.