The customers should also file suit.
We've had phone numbers similar to a fast food place and a bowling alley. It's not fun getting calls at midnight, but there's always payback, heehee.
Back in the 70s I had a phone number that was one digit off of a taxi-cab company. It was really swell to get phone calls from drunks at bars at closing time. I finally started telling them to "stand out in front and wait for the cab---he's on the way."
My work # was once one digit off the Amtrak terminal and the Welfare office... what fun I had!