how can I turn off wifi

[AC Question]

I am using samsang j5.But now a days iam facing some problems. I can not turn off my wifi. I have already changed many of my settings but it not works. how can i get rid of this problem ?

 

[B. Diddy]

Welcome to Android Central! If you go to Settings>Wi-fi​ and tap the toggle switch there, does it respond at all?