Internet Cable Extension Cord Cable Internet Service Is Constantly Interrupted And Modem Resets Or Needs Resetting?

Cable internet service is constantly interrupted and modem resets or needs resetting? - internet cable extension cord

We had cable internet over 3 weeks is constantly interrupted the Internet and sets the modem itself, or do I have to re-start to restart the service. This happens 15 times per day. The first high-tech cable actually found a worn cable through so that it replaces and it gave me a new modem. He continued, then a week later, another technician came and found that the problem was that the cable was connected to an extension of doing it, so that the box the cable line to the mass was with, if so, the interruption the service at all times. My problem is that no connections box, cable modem, or have reason, then you can connect to an extension cord with three legs, not the earth! However, we have a surge protector anyway, and put everything in it. I still get a break. This was the only answer he gave after 3 buses have been here. They say their good signal. First, I am wrong in my assumption the earth? Secondly, suggestions?