Santa Cruz, CA fiber installation is a month late with no communication from contractor

For my AT&T fiber Internet installation in Santa Cruz, CA, the AT&T tech who came out said that the conduit that the fiber had to be run through was clogged, and that they would be sending a contractor out to try to unclog it. Failing that, they said, they would be sending someone out to run the fiber through the air from the telephone poles in front of my house.

The contractor was supposed to arrive by the 19th of May. I went out on the 20th and saw no evidence that anyone had been there and even attempted to unclog the conduit. I called in to AT&T. I was told that the "Jeopardy Resolutions Team" was on the case, and the contractor would be out in the next 2 days. I check again after that. No evidence of any work having been done.

I call AT&T again, and get referred to the "Buried Wire Center", with a phone number and ticket number. I wait for them to be open (Monday-Friday, before 3 PM Pacific). I call them. They assure me my conduit will be cleaned by the end of the week.

I check back the next week (the week of June 10th). No evidence of any work having been done. I call the Buried Wire Center again on Friday. I wait on hold for half an hour, and get hung up on when they close at 3 PM.

I call back again today. I wait on hold for 45 minutes, and get a nice person who calls up the mysterious contractor. They assure me that the contractor will call me later. They refuse to give me any contact information for the contractor.

It's now almost 5 PM, and I still have not received a call from this nebulous contractor. I am an extremely dissatisfied customer.

My questions are:

1. Has something like this (an AWOL contractor delaying installation or servicing of a fiber run) ever happened to anyone else? If so, how did you fix it?
2. Does anyone have contact information for the contractor(s) AT&T uses for fiber installation in Santa Cruz, CA? Can someone at AT&T pretty please put me in contact with the contractor more directly? I'm almost certainly closer to them and possibly better able to get in contact with them than the folks in the buried wire center who were surprised to hear I was in California, and who obviously haven't hounded them sufficiently.
3. Does anyone have an e-mail or even a postal mail address for the Buried Wire Center?
4. How long is AT&T willing to wait for this contractor to do their job (or to explain to them why they can't) before they hire a different contractor for the job?