I really appreciate the website that allows you to close your account by yourself.

Maybe, sending an email to request that is acceptable.

But adding a "customer support" on telegram/WeChat/QQ? Why do I need to talk to a person when I just want to delete my unused account?

And I certainly remembered there is a company that does the email things for you, but I can't remember the name. It's the sponsor of some IT related YouTubers. When I saw the ad, I thought who needs that, closing accounts is super easy. Now? I see it's a torment and I definitely need one.