You can easily manage your account preferences and unsubscribe from future communications/newsletters from the User Profile of your accusonus account.
If you want to delete your data completely, then please get in touch with our support team using the Contact Support form and they will delete it for you.
However, because we value customer feedback more than anything, let us know if it was something we did that bothered you (like an e-mail or something), so we can improve it next time and make the experience more user-friendly.