Bruhat Bengaluru Mahanagara Palike [BBMP] — Rain water drain pipe blocked

Address:

No51,1st D cross,3rd stage,4th block, Satyanarayana layout 1 stage ,Bangalore 560079,near water tank bus stop

I, T.N.Anantha, residing at No51, 1st D cross, 3rd stage, 4th block, Satyanarayana layout 1st stage, Basaweswarnagar, Bangalore 560079, near water talk bus stop would like to bring to your kind notice the following mater.

At above said address BBMP started concrete drainage work. While laying concrete wall they have blocked my house rain water drain pipe.because of this mistake by BBMP contractor rain water is not going to drain, instead Rain Drain water is reversing and entering to my house. Hence I request you kindly advise concern contractor to open my rain water drain pipe at drain.please do the needful, please provide Contracter phone no also.
Thankfully
T.N.Anantha
Mobile no [protected]