"We have recently become aware..."
"Yes, you've been 'abusing' our service for years. No, it hasn't affected any of your neighbors to the point they've even noticed. Still, we want you to stop... or else." (we're going to take our ball and go home and no one can play any more [pout])
Verizon -- proving to our investors that we're here for them (PR, PR, PR, ...)