I believe this is no longer the case. There is one call centre team, supporting all retail products, for better or worse. Don't be surprised if they tell you to re-seat your sim card.
Eina bliksem. If that has changed then it is no wonder customers are bitching!!
Yes, but there is no TI call centre; the retail call centre which is responsible for providing support for ADSL lines sold directly to customers must be able to resolve problems for customers (they have access to reset ports, I think change port profiles). Congestion, cable faults etc should be logged as faults to Wholesale and Networks (the way an ADSL reseller would) . Whether they have access and whether they know how to identify and what to do to resolve problems is another question.
More or less what I was inferring in that TI cannot fix network faults any more than other ISPs can.
Thanks!
And good luck...