Many channels missing/not loading

Many of my SD and HD are not loading or are missing. When I tune to the channel I get a blank screen which eventually kicks to a verizon service agent screen that "checks for blackouts" and then comes back to tell me the channel is not available. This is happening on too many channels to list. I've reset the box twice and worked through the online trouble shooting to no avail.

Verizon, get this fixed before I cancel on you.