Xiaomi India — mi note 4. creating problem

Address:

Rupnagar, Punjab, 140124

Suddenly stopped working and didn't start after
I starts while connected to charging. If we remove the charger from phone it again get switched off. & didn't start without charging. & phone is charged56%. More than half year ago same problem was created but it was corrected automatically. And some liquid was being released by phone system. It was having very foul smell.