What to do with website that don’t let you delete your account?

I found this website I created an account on. There is no way to directly change your email address, change password, remove added addresses, and even change the account name.

Most of it requires contact email, which is a dead site that nobody goes to. Legit no way to change account name or email address or password. I do not want to contact them at all which will revive the account.

Even pretty sure they require you to pay a FEE to even delete/request your data.

In there privacy policy, they dont even mention anything about requesting deletion, nothing about deletion.

What can I do? I do not want to contact them at all. Should I just leave the account to rot? What if the website gets breached?