Is it useful for Jin Ying to complain to Hangzhou Bureau of Letters and Calls in stages?

1. It is useful for Jin Ying to complain to Hangzhou Bureau of Letters and Calls in stages. Hangzhou Letters and Calls Office is a department of Hangzhou Municipal Government, which is responsible for handling and coordinating letters and visits from people among various departments of Hangzhou Municipal Government.

2. If there are any violations or illegal acts on Jinying's staging platform, you can complain to the local banking regulatory bureau, financial office and other relevant departments, or you can directly bring a lawsuit to the court.