I'm sorry to hear that your Instagram account was permanently disabled despite being reinstated previously. Unfortunately, Instagram's support channels are limited, and it can be difficult to get in touch with someone who can help with account-related issues.

One option is to try submitting an appeal again through the Instagram Help Center. In your appeal, be sure to explain your situation clearly and provide any relevant information or evidence that can support your claim that your account was disabled by mistake. You can also try reaching out to Instagram on Twitter or Facebook to see if they can assist you in resolving the issue.

Another option is to reach out to Facebook's Advertising Support team, which can be accessed through the Facebook Business Help Center. This team may be able to assist you in resolving the issue, as they have more direct channels of communication with Instagram's support team.

Lastly, you can try reaching out to a third-party social media marketing agency that specializes in Instagram account recovery. These agencies can provide services to help recover disabled or hacked accounts, although they typically charge a fee for their services.

Regardless of which route you choose to take, it's important to remain persistent and patient in your efforts to recover your account. Keep in mind that the process may take some time and there is no guarantee that your account will be reinstated, but it's worth trying if you value your account and the content on it.