Continous unstable connection or no connection

I have been struggling for a while now with inconsistent and unstable internet connection. I constantly have to report or to the technical team(which is always trying to assist) but not long after the issue continues and they just keep updating settings. I think the product you are providing has been getting worse and worse and they can't seem to provide me for what I am paying for?! I have now replaced the cable as this was one of the apparent issues...still no stable internet.