"This thing is defective!" the customer ranted, waving the device at the technician. "It worked fine for an hour and then it just died!"
"Are you using the right incantations?"
"Donum Lingua!" the customer shouted into the device. "See? Nothing."
The technician fiddled with the device, but couldn't get it to work.
The customer glared. "I told you it was defective!"
The technician slid the planchette across the letterboard, bringing the customer's information up on the crystal ball. "It is under warranty. We can replace it, or we can refund your soul... but that's subject to a 5% restocking fee."