Any "real" fix to disconnects??

This is second internet account I have had with Cox and the same thing always seem to happen--which is why I canceled the first time and am ready to cancel again.  Disconnects seem to happen every hour or less starting early in business week and get fewer and fewer as week goes on.  I have recommended modem, recommended router .  Technician has changed my cables, splitters and connections.  I have followed ALL recommended support requests and advice.  Have tried PC and MAC performance tools and it just gets worse and worse.  There must be something bad going on in the system or this wouldn't happen.