AO Smith — Aggressive dog attacks

Address:

H 38/7,Phase1,Dlf City, Gurgoan

We live in H block of Phase 1, DLF, Gurgoan.
One of our neighbour has a very aggressive and hostile dog. He lives in H 38/3, Second floor, Phase 1, Dlf. Gurgaon.
Even after repeated request to the owner Mr. Sumit Chauhan(ph no.[protected], the dog is allowed to come out without any leash or escort.
He attacks and bites people and other dogs.
It has become difficut to come out of one"s house in fear of being attacked by this dog.
Kindly help resolve this issue.
We are all dog lovers, we do not want any harm to the dog .
At the same time we do not want to be attacked by him to.
Kindly please help resolve this issue.