Tenants turned off fridge acidently...how would you handle?

[Tariq B.]

Greetings everyone, 

So had a work order submitted to me about water being on the kitchen floor and the freezer not working properly and having defrosted. Mr appliance was sent out to the property and he determined that there are two buttons on the fridge that when pressed simultaneously it puts the fridge into demo mode effectively shutting it off, which is what caused the fridge to stop working. He charged $99 for a service call. In your opinion who is responsible for payment to Mr appliance? I will add the tenants moved in a week ago.