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Multiple times a week your Internet service goes out? When your service goes out, do the lights on your modem look different?
Complaints here don't get anywhere. Try DSLReports and write a review. Or vent on Reddit.
What does it mean when all the lights on the modem and router are normal, but the internet is not there?
Probably an issue with the device trying to connect to the Internet. I understand you've been troubleshooting a lot of lately but you've only been using 1 router, right? If you changed a router setting, you'll either need to undo the change or update your devices to match the change.
If I changed the router setting, it was by accident, since I wouldn't know how to do so. I think I reset the router once, though. As I said in another thread, however, since posting my first issue here, there has been no more Cox outages of any type.