Municipal Corporation Of Chennai — Drainage problem

I have a drainage problem in my house .The pipe which connects all my house drains to the Main Street is clogged. We have checked the drain connection in my house they are clear .The fault lies in the Main Street drainpipe line .Request the municipal authorities to have this checked and correct the problem. House no : 217 Ram nagar 3main road Vijay nagar Velachery.
Thx
Mrs Prabhakar