And what exactly is a "clone" in this context? Did they merely make a similar site or does it include your IP?

If it's the former then i can't imagine you can do anything about it because they haven't done anything wrong. If it's the latter then you need a lawyer because it's not the host's responsibility to enforce your IP rights, especially since from their perspective you could be a competitor trying to use illegitimate tactics to sabotage their customer.