At present, the telephone number belongs to real-name registration system, and the police have contacted it, so don't worry.

What you have to do now is to make sure that everything in the business is fake, because you already know that the invoice forgery company is making fakes. This is not simply a question of cajoling you into spending 400 yuan on impulse.

So you don't have the option to return the goods now, so you can only ask the police to identify this matter and then see how the liar handles it.

You don't have to worry about taking up public resources, because you are not alone, and all kinds of tricks can't be prepared to fully cheat you of 400 yuan.

So for more people's 400, be sure to call the police and let the police help you. Your strength alone is limited. Facing these swindlers directly has no guarantee for your own safety.

I wish things a complete solution.