Someone created servimg.com account using my email address

I just received an email from servimg.com saying my account has been created using the email address the email was sent to ..BUT.. I never registered there with that email address. I registered with a different email address. I looked and looked for some way to let the people at servimg.com know someone just used my email address to register, but I found their contact info nowhere. I am concerned someone is uploading content that I will be blamed for because they used my email address to register. I tried logging in using the email & password that was sent & couldn't log in. I was going to delete that phony account.

What would you suggest I do? Thank you in advance.

Have you uploaded any images on a forum hosted by Forumotion?

Yes I have, but using another email address which is the same one I am registered with at forumotion. I didn't upload anything using the email address they used. I couldn't even log in to close that account.

This is being handled through private messages since it deals with an email address.