Talk to the banker NPC in-game about your key, should give you the option.
Chat with our AI personalities
It is not possible to delete a RuneScape account.
There is currently no option to delete your RuneScape account.
There is no way to delete a Runescape Character, it always remains on their system.
no
you can't, it takes forever so that if a hacker was trying to do it, you would have enough time to notice and stop the process