I've also bought 2000 yuan all my life, and now he says it's either transferred to the head office or there is no result. The industrial and commercial bureau said that there was no choice but to call the police and file a lawsuit. The police must have said that it was more than 5000 yuan. Either you find a group of people to call the police together, and if the amount exceeds them, you will go to the Criminal Investigation Bureau to file a case. Or sue. But the lawyer's fee is 2000 yuan, unless everyone pays the lawyer's fee together, the more money, the more uneconomical it is. But I couldn't find anyone, so I had to give up.