The fact the modem can't find the other end could be either the modem is faulty or the cable connection to the street is also faulty. It's hard to say, but they've obviously checked the node your cable service sits off (note, node is not the same as "exchange" for DSL) and found no area fault so they've decided to replace the modem first.
If after modem replacement, you still get the "orange flashing light", then it'll need a tech to visit.
Well, I have spoke to someone else, and they did a test, and they reckon now that there are major issues in my line.
Not so much for my modem, and it's a back end issue.
Been here without internet for 3 days now.