Bad customer service

My telephone and Adsl line is not working from 29/02/2016. I called the call centre and a technician came out to fix it only for it to stop working again. I again called the call centre which resulted in a new fault being logged. Two days later the fault was closed without a technician coming out or the problem solved. I again called the call centre and was told the fault will be escalated. 3 days later I called to find out the progress only to be told that there was no escalation and I have to report the fault again. This is unacceptable. I asked to be contacted by a manager but no one has contacted me. I am very disappointed with the service or lack thereof.