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I suggest that you try to repair the phone software using PC Companion..
Before repairing your device you may want to backup your information first. Check out this topic for more information on how to.
How to backup?
If the issue should still remain I think that this needs to be examined and fixed at a repair center. For more information about how to submit your phone for repair and where, contact your local support team.
Now It Is Even Getting Worst Broda! Notification Panel Don't Scrolls Down Automatically Just Like Before As I Mentioned But Now Even After I Use My Fingers To Scroll Down But It Doesn't!! This Is Getting So Bad!
Anyways Thanks Brother For The Suggestion I Will Try It 
Hi @Mohit_13
Please, also try boot your device into safe mode as explained here. If this issue is not present in this mode, that indicates a third party app is causing the problem. In this case exit Safe Mode and then un-install any third party apps you don't need and clear the cache/data for the apps you want to keep. I´m at disposal for any question.
Hi @Mohit_13
Have you also followed @Samuel suggestion too ?
Hi @Mohit_13
Ok, try it and keep us updated please.