Hello Sandra, I definitely understand your concerns, we would like to get this problem taken care of for you as soon as possible please give us a call at 866.945.3258 and we can help schedule a service call if necessary.
All four lights blinking means the modem has detected a fault. That might be a loose cable connection, bad TRIA or an actual problem with the modem itself. A few other things too, but those are the most common things that cause it to show a fault.
Like Lindsey said, the best thing to do is call them ASAP. You might be able to tighten a loose connection if it's within reach but, beyond that, it probably needs a technician to fix it.
I have had the four lights blinking on a few occassions, I just unplugged the modem for at least 10 seconds, then plugged it back in and it went back to normal. Even in the flashing mode everything still worked as usual.