How to make volume sounds unchangeable?

Hi all,

I have note edge n915f with stock touchwiz Samsung rom with lollipop,,,,

Is there a way to make sounds volume unchangeable?

I mean i don't want to change ring, system and notification volume forever,

I don't know why my phone keep playing with volumes randomly,

I don't want to use apps like volume locker, i want something like modifying a file in my system or something like that. ....

Thanks