Pathetic service from vumatel

I am quite disgusted with firstly the service and secondly the turn around time with this company, my installation had taken place on the 17th of September and since then I had been calling and here I get the same response "we will send out the installation team today we will have you up and running by today" the same sentence I have heard now for the past 3 weeks and to date no prevail, I am a discovery financial manager my time is my money and each time I call I use my own airtime and facilities, I had been told yesterday the 4th of October by bianca in installations that it would have been sorted out yesterday and had been told today by Yusuf that it will be sorted out today and yet again no prevail, I call back into the call center and get told that abdulla will contact me tomorrow to confirm a date I have emails stating that I was supposed to be up and running by the 28th of September since then to date no one from vumatel had contacted me I have been contacting them directly and nothing has been done.