Circuit went down, No MAC address from ISP's Ciena box Circuit went down, No MAC address from ISP's Ciena box after restoration

We had a circuit go down due to a fiber cut out in the street, and it is still down after repair.

Show arp on the router shows an incomplete MAC address for the Ciena port. The ISP says it must be us because they're all good so I tried two other routers and replaced cables but no change. They dispatched a tech who also said they are good to the smart jack. Anyone have any bright ideas what else I can try? It's a tagged circuit and my config is good. All I can get a hold of is friendly but clueless denizens of Mumbai or some such place.

Edit: Not sure why title is kind of doubled. Maybe a mod can fix it?