INTERNET OFF

I am at the point of giving up. <br> I have logged calls via SMS, Internet and Phone and have just again logged another one.<br> My internet HAS BEEN OFF for 6 or 7 days.<br> DSL is up. <br> The call centre cannot fix it and my call 157CEK310315 was closed after phoning me and after I told them it is not working via phone and SMS.<br> I logged another call 274CEK070415. I am sure it is going to go the same way.<br> <br> Please advise me what to do. I am expected to pay for non existing service.