Internet Connection vs Me

This internet connection is killing me. Mostly, I can surf the Internet or download files at ease. Though, it is disrupted and I am disconnected occasionally. When it happens, I have got nothing to do but repairing the connection several times. Yeah, several times. I mean it. Never a single repair restores the connection. I have been looking for the solution. I have tried setting a fixed IP for the connection, using OpenDNS servers as my primary and secondary servers instead of the router. None of these helped. I even doubted that it has got problems with the router. It is quite a nuisance.