You can do it yourself, from the app, in under a minute. Nobody has to approve it and nobody will call to talk you out of it.
It happens immediately. Your profile disappears from Discover, your matches stop seeing you, and your photos and documents are removed from storage before the account row itself goes.
None of it can be recovered afterwards, by you or by us.
Deleting the account ends it. Premium here never renews on its own, so there is nothing to cancel — but any time left on it is lost, and it is not refunded.
Write to [support email address] from the address on the account. We will check it is you before anything is deleted, and it is done within [how many days?].
There is no form on this page on purpose: a form here could not prove who is asking, and an account is not something to delete on a guess.