As in TDP4 ( a little game I play) when you delete account you should have a "2 days notice" b4 it will be deleted, in case
1: you regret your action.
2: A scammer decides to delete your account because you wanted to sell it to him.
Now this point of suggestion points towards speedy's suggestion and mentions his 4 numbers pin.
This suggestion can go towards deleting the account, meaning you have to insert a 4 number pin b4 deleting your ( someone elses) account.
you probably saying "yeah but what if I 4got the pin" well, you're going to delete the account anyway, if you 4got the pin, make new one..