How can I fix the power slide on my COWIN E7 BLUETOOTH HEADPHONES

My headphones dropped off of my head onto the tile floor in my school, the slide for off, regular mode, and noise cancelling, got pushed all the way in but my headphones were still on. When I got home, I got a pair of tweezers to pull the back out to where its supposed to be, I was successful in that but, they won’t turn off and they’re stuck on noise cancelling, is there anything I can do to fix the slide back to normal or is there somewhere I have to go to get it fixed?

As you can see from the picture or if you can’t see it, the switch is on off and they are still on.