Can somebody delete my account
You need to drop [email protected] an email.
Why not? Not sure about your question. If you want your account deleted you certainly need to contact Cloudflare.
How do i do that
Send an email?
I believe I wrote that not 15 minutes ago
You can login to Your cloudflare account and then create ticket request.
Also, You can directly send an email by using Your email which registered in cloudflare to [email protected]. Cloudflare team will help on this.