Online search: use the search engine, enter the name of the software, keywords or the name of the developer, and try to find relevant after-sales service information.
Visit the official website: Visit the official website of the software, and you can usually find the contact information of after-sales service in the "Contact us", "Support" or "Help Center" sections.
Consult peers or online communities: If you can't find the after-sales service number directly, you can try to ask other users in online communities such as related forums, communities or QQ groups.
In short, in order to obtain an accurate after-sales service telephone number, please be sure to obtain information from official or reliable channels.