Bangalore Water Supply & Sewerage Board [Bwssb] — Sewage problem

Address: N-539554

There is no free flow of sewage .it seems, there is some blockage in the bwssb line.we had this problem 3 times in the past 3 months and it was temporarily rectified by cleaning the sewage pit within our premises.
we had even telephoned phone number 1916 of BWSSB on 23rd jan 2022 and furnished RR no and the mobile number .but nothing has been heard sofar.even reminded on 24th y'day as well but no proper response .
we would request for an early attending to the problem.