Line activation

I'm completely disappointed by the level of service I got from Vumatel. My ISP has made thousands of escalations to have my line activated but to date nothing has been done. I even took the initiative to contact their call center and I spoke to 5 different people and their response is that "unfortunately there's nothing we can do on our side we have escalated to the relevant department " sometimes the calls are not even answered they just hang up. I even sent an email to their complaints department and all I got was that they have escalated my matter. This is so pathetic and call center stuff is unprofessional.