Then they are probably not paying it anyway.
I would suggest one of those jobs that they bang on about being stolen would be the way forward for them. Fruit picking maybe or litterpicking.
Many years ago when I worked in sales, a bloke kicked off because we wouldn't provide him credit for a home theatre kit. The only letter he produced for id was a parole letter and not on the list. His partner had a poor credit rating apparently (suspect i knew how, and who's it was in reality) and his shock when I suggested he have some of the bills put in his name rather than his his partner was something to behold.
This prince among men clearly thought that the world owed him. She was clearly terrified of him, and he wasn't happy that 20 year old me was telling him no. He's the sort of man who would be making this pathetic threat.
I suspect the bill is not in their name.