You won't find any automated way to delete a Roblox account on its website. Use one of the 3 methods listed in the post to delete Roblox.

You can delete a Roblox account by simply emailing the company, but there are a few other ways to do it.

Roblox says in its original complaint that PlayerAuctions disrupts and undercuts its business and economy by allowing players to buy and sell their accounts, items, and in-game currencies.