@lin10
To reach out to the support team, you can typically follow these steps:
1. Visit the official website or user portal of the Voice API service you are using.
2. Look for a 'Support' or 'Help' section on the website.
3. You may find options to contact support via email, a support ticket system, live chat, or a phone number.
4. Choose the preferred method of contact and provide detailed information about the issue you're facing with the knowledge base file upload.
If there's a specific support channel or contact method recommended for your Voice API service, please use that to ensure a prompt response. If you need further assistance finding the support contact details, please let me know, and I'll do my best to assist you.