Ouch!

Sorry to hear about your problems.

What is this switch labeled? Is this your flight mode switch? If yes, does it still function? Can you manage to set it to ilde 0 (NRML) if not already set? You won't be needing to move this switch this until after you've mastered hovering, in fact, you shoudn't need to operate any functions requiring switches until after you've mastered hovering so just find an instructor and get on with burning fuel.

Are you handy with things electronic? Locally, we have a store 'Active Surplus' that has been a great source of replacement electronic parts for me in the past. Take the switch to your local equivalent. If you're not so handy, find someone who is (that you can trust). If you're not handy or don't know someone who is, send it in for repair (especially if it's still under warranty).