Hulu, ABC, Disney have blocked my entire subnet!

Anyone know any good contacts with any of these companies so I can get this resolved? As an ISP, having my entire subnet blocked prevents my customers from being able to use these services they pay for. We are getting the outside of the U.S. or going through hosted proxy issue. I have never used proxies, but even if one of my customers did shouldn't it block just the one IP address? Thank you, Brett A Mansfield