What is the phone number of WeChat wallet refund center? The national customer service telephone number is O57 1-28O9-44OO. The telephone number of manual service is O57 1-28O9-44OO. Customer-centered, by providing reliable, punctual and convenient quality services, we strive to meet and exceed the commitment of the fund's net asset value, which means serving the fund's net asset value 24 hours a day.