My internet service has been shut off due to copyright infringement.

If your internet service has been disconnected please , follow-up directly with your service provider for a solution.
Your disconnect notice most likely did not come from DMCA.com but from your phone or cable provider.
DMCA.com is a copyright takedown and protection service provider that issues takedown requests on behalf of our clients. We do not govern the Digital Millennium Copyright Act and we do not disable internet service.