Personally, I found it a bit weird that you you need to use an offline device to close an online account, but on the other hand I understand that they do this for security reasons. So this is the only way to delete your Shoedazzle account:
1 Call their customer service on 1-888-508-1888
that’s what say in the very kind e-mail they sent me. You can call them almost anytime: From monday to sunday from 9AM to 8PM.
They might be asking you why you want to remove the account (e.g. because you’re simply not using it anymore) and run an identity check on you. After that, they will close the account for you.
Source (and thanks to): Customer service of Shoedazzle