1. Official channel: The complainant can try to make a complaint through other official contact methods, such as the complaint mailbox or message board on the official website.
2. Social media: Petitioners can post complaints on official platforms such as Weibo and WeChat official accounts, and pay attention to reminding relevant official accounts.
3. Legal channels: If the claimant thinks that the anti-fraud center's behavior involves legal issues, he may consider consulting a legal adviser or lawyer to find out whether it is necessary to lodge a complaint through legal channels.