Need help in filing a consumer case against samsung

I am looking for some help to file a case against Samsung India. I bought a new washing machine that had a dent on the body. I asked them to replace it but they say that the case has been escalated to a special team and they will call me. No one has ever called me or spoke to me in the last three months. Everytime I call them they promise that someone will call me but no callback or update has ever been given to me. Please contact me at 9971556979.