NO AUTHENTICATION ON LINE

I have had trouble with my ADSL line for 3 weeks. Technicians were eventually sent last friday and the problem seemed to be resolved after the entire day was spent . this only lasted 2 days and the connectivity was lost.<br> <br> I had taken the phone numbers of the technicians who worked on the problem and called both of them to advise that the problem had returned, however neither of them have returned to fix the problem.<br> <br> I have placed another call to Telkom and have yet another reference number - the 7th! -but i still do not have connectivity.<br> <br> the problem is that the line is syncing but there is no AUTHENTICATION.<br> PLEASE HELP AS I AM PAYING BOTH FOR THE LINE AND 100 GIGS WHICH I CANNOT USE.