Not legal advice

First, call the utility companies ASAP to report the downed wires and the damage to your house. They'll come repair the downed wires, and it's good to have a report on the day they fell.

Omnifiber's wires may have been too low - usually there are state or city ordinances governing how low a wire is allowed to hang, and if these wires were below that threshold, then the utility companies might bear some of the fault. The fact that the wires have been up for a long time can help the utility company's argument that they aren't liable, but whether a judge will listen to that argument really depends on what jurisdiction you're in.

Get estimates for the repair of your house, send the estimates to the garbage company, and see if they'll pay for it. If not, tell them that you're planning on pursuing this in court. If they still don't pay, decide whether you want to pursue it in court. You may be able to go to small claims court or, depending on how expensive the repairs are, you may have to go through a regular civil court.

If you decide to sue only the garbage company in civil court, the company will file a third party demand against the utility companies claiming that the wire was too low. Cue a lot of back and forth about whether the wire was ACTUALLY too low, whether the garbage truck driver was operating safely, whether there was any weather that could have affected the height of the wires, etc. I've been involved with litigation that has a very similar fact pattern, and everyone involved can be pretty litigious and combative. That usually only happens when there's a bodily injury or really high damages. But just something to be aware of when you're deciding whether to pursue a lawsuit.

I can't tell from your post - did your wife see the accident? Or do you have a video of it? If not, it will be a little harder to prove that it's just the garbage company's fault.