I would also see research who Rogers Cable Inc. Pr is. If their legit, as in not shady, you can report it to their abuse department(assuming they have one)
I have Rogers as my ISP. They are very legit. Are they quick and responsive? HA! Slow as ... well, insert euphesium here. In reality I would send out 3 emails:

One to [email protected]
One to [email protected]
One to [email protected]

Each one of these has a vested interest in dealing with this email.