Brother. Please explain what do you mean by "NOT WORKING"?
Did you visit Toyota capital Motors headquaters at Agha shahi avenue? Or at Toyota Capital Motors abpara?
If you really want to stick to Toyota dealership then the best among those (it would be better if I say, LEAST WORST among those) is the 1-9 potohar road branch. You can meet the supervisor famous by the name Shah JI and tell him your problem.
and do check this thread:
But please explain first what exactly is happening to the brakes? Exactly answer the question of Murtaza_murti bhai.