How do you completely delete an image from a site?

I found some directions on the squarespace help saying you can delete an image by going through the my library tab. I can see the image listed there but the option to delete it is not there. 

To be clear - i don't want to just remove the image from a page - i want to complete remove the image from my site so that it's no longer viewable/accessible. 

Thanks

I desperately need to do this also. 

If you delete all copies of the image from your site, Squarespace automatically removes the image sometime between 8 to 38 days later. 

If the image must be deleted sooner than this, the site owner should contact Squarespace Customer Care, including the following information:

• Static URL Removal Request
• The domain name or built-in domain 
• The static URL(s) of the images you’d like to remove. If you need multiple assets removed, separate each URL with a comma.