Constant Outages

So we moved into our new home in March of this year and got the 1 Gbps plan. Two weeks after everything was installed, we started getting random outages CONSTANTLY every 10 minutes or so. The outages sometimes last hours, so we call a technician. He says the coax line is bad, so he sets up a temporary line. That works for maybe a week, and we start getting the same issue again. So we call a second one, they come in after a month, and replace the temporary line with a new permanent line. It's fine for 2 weeks, with maybe 1 or 2 outages a day, and back to the original issue. At this point, it has been 4 months of consistent issues with unreliable internet, whether you are wired in with Ethernet or using wireless right next to the modem; it just keeps losing connection. So once again I contacted support, and this time they just said they will charge for the visit, even though I have not been paying for any of the previous visits. At this point, I don't know what to do. The internet is so unreliable I cannot work from home with constant disconnections from my meetings.