You can ask for your player account and game progress to be deleted.
To do so, go to the options and check the privacy policy section. You'll find the button to delete your account. A window will appear with a message for the consumer support, to request the account deletion.
Once the message is sent, it can take up to 14 days for the process to be completed.
Please note that deleting an account is irreversible and you will lose your progress permanently.