Used Modem Activated months ago has now become De-activated and being told I can't activate it now
So my story bought a used Modem from Amazon in September. At the time it activated just fine showed up on my account. Was able to stream shows on my phone etc. Now come December I can't stream on my phone it says can't find Modem. I login to my account is says Unavailable for my modem.
So I call Comcast and they say that I can't activate my modem because it's someone else...... but its MINE and I had it activated........ Who can fix this?