More than 2 weeks with no resolution

We started having problems with our connection 17th July & reported it (10210). It worked intermittently between that date & 30th July when the phone line died. This meant no internet or voice. I logged another call with the call centre(ref no.12BWK170715) & was promised a response. On 3 August I called again (after having no response) & was told that they had escalated it (escalation number 718885). On Tues I called again & again was told that someone would come out that day. I called again at around 4pm & was told the technician was on his way. On Wed still no-one & I called again. Thursday same story. All of these times I have to call from my cell phone - not having a landline - & wait for between 20 - 40 min for someone to answer 'due to high call volumes'. Yesterday I spoke to Jeanette and she promised that a technician would be here today (Sat) betweeen 8am - 12pm. It is now 3pm & still no-one. Called again & was told that they do not have control over the technicians but it was recorded that he was coming. I work from home & am losing income - what more must I do to get someone to fix the problem? Please can someone explain why I have no phone line????