Xiaomi India — Service centers reply of damage

Address:

380024

I have redmi Note 3. somedays before I found a spot on my display. Today I have visited your service center they have told me that your phone is liquid damage. The spot they are showing I have not found any liquid there or not look like any liquid was gone there. But they have told me that it's out of warranty.

They have keep my phone there for 3 hour and after that they told me this. I am feeling that there is something fishy.
I have protect phone all the time and as per my knowledge never any type of liquid enter in my phone.

I really want the answer of this.

Before a year I have redmi2 when that phone's display was not working that time also the show me something like this and told me that this phone is out of warranty now.

Does company shows excuse for not repairing phone. Or they are making people fool..