No Service

I Have Had Nothing But Trouble since I got my ADSL and Phone Line installed,for the past 4 weeks My phone line and Internet has been off for 4 days a week,so it's been off more then it's been on since I got it,this time we are into the 5th day and still no service,I've tried calling all day today to see what the hell is going on and no one answers,plus I have to use my air time to call as ofcourse the phone line is down,I am tired of paying good hard earned money for a service that doesn't exist,so either get it sorted for good or take the service and shove it.