Koryo — I am complaining about washing machine leakage.

I purchased koryo front loadad washing machine 6kg from trivandrum big bazaar on last August. Now the problem is leaking and while functioning it makes large sound also.so many times I tried to contact customer care. But no use.last month when I called customer care number, they said to me that l should register a complaint and they immediately come to our house. What can I do? Please take the necessary solution.