Crompton Greaves Gyser — Not working and no response from respective persons

We bought a plastic body instant geyser about 8 months ago, which has 1 years warranty. The warranty book or the company's site does not have even a contact no. for logging a complaint. The nos. which are mentioned never respond. I am just stuck where to complaint. Dealer/Retailer does not entertain the complaints

I have mr.prem ([protected]) number, but he is not responding any way.. I called him more than 10 time, but no response from his side and company side

please help me