The best call center in Tianjin is Blue Point Technology, which is used by many large enterprises in Tianjin, such as Tianjin Carrefour, Sports Lottery, Country Garden, TEDA, etc. The quality is definitely no problem, and the after-sales service is also very good. Our company has just started to use their hotline products recently, which is very convenient to install and super easy to use!
Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.