Their phone calls never stop from morning to night. Their answer for a phone call is exactly the same as your said, ****company(Yang Sheng), this is ***(Yang sheng), May I help you(Yang sheng). They speak so quickly that I only notice they always answer the customers by "yang sheng". For example, the words YES and SURE, the most populare words in their tongues, they are spoken out like using the third tone of chinese pronunciation. I appreciate your post. I will pay attention to what they say so that I can exchange ideas here.