Unable to fix a reoccuring problem

<p>I have been having a problem with my internet connection since 12/12/2016. A technician was at my house on 17/12/2016, but on 18/12/2016 the problem was back and has been with me ever since. </p> <p>Their service is poor. Spent hours on the phone with someone at the helpdesk trying to correct my wifi username and password. They eventually put the phone down. </p>