Xiaomi India — complaint about redmi note 4

Sir i have a complain about my newly purchased redmi note 4 phone. The problem is that some time when i do unlock and up the shatter i get a sound like firing inside and i also get the sound when i open and operate the camera, after open the camera when touch the existing photo and when i touch the back bottom i get the sound like firing, i know that there is a inbuilt camera shot taken sound, but this sound is not that sound. Because this is my first xiomi redmi note 4 64gb phone to solve my curisity i discuss the problem with some redmi phone holder. But i disappoint when came to know that there is not such a problem in other phones, because my phone heardly 3 week old.
So i excitingly waiting to know the solution of my problem and i hope you will solve my problem attentively. Now you repace my phone with new one or do something else it's completely under your cosideration. As a xiomi redmi note 4 64 gb consumer i hope you will do best for me.
I am waiting for best reply. Thankyou.