Which on is correct? “Closed your account by/to 30/11/2020”

I've closed your account by 30/11/2020

I've closed your account to 30/11/2020

Neither of these makes sense. They are both incorrect.

You could say

I've closed your account until 30/11/2020. This means that you have closed it temporarily and you will reopen it on 30/11/2020.

or you could say

I've closed your account (effective) from 30/11/2020. This means that the account was/will be closed on 30/11/2020. There is no indication that it will ever be reopened.