Micromax — Do not repair my phone which is also in warranty

Address:

Kurukshetra, Haryana

at 1st my screen was broken then i gave my phone to micromax care and says that it also heat up and gave burning smell after this they only repair my screen but no solution for heating up and after 2-3 week when i was updating my phone to lollpop android then it suddenly switch off and gave no respone after that i again gave it to care they said we can, t repair and said that its seal is broken but i only gave it micromax care and so how is it possible