Blinking Green light

So over the last 2 days we've had this problem where our modem keeps blinking green and we can't use our internet. In these two days we've had 3 sets of techs come out. The first one replaced the modem and the second replaced the wiring and modem again, while also putting in a ticket for water in the main tap. The third tech that worked on main tap "fixed the issue" and closed the ticket. However the issue still persist its still going through periods where we have internet then don't for hours at a time. After all this time the issue still is not fixed, and now have to wait 4 days until a 4th set of techs come out to look at it again I've tried just about everything on my end power cycle, made sure it's not over loaded, I've checked 10.0.0.1 I've factory reset and still am having an issue. You'd think that if the issue still wasn't fixed they'd get someone out right away not make them wait even longer.