Colombo crime-family soldier Frank "Frankie Camp" Campione, 65, has written a furious eight-page letter to his son Michael, excoriating his progeny for ratting him out to the feds. It's being entered into evidence as a judge prepares to sentence Campione, who's been fuming in jail because his son won't take his calls and some "Rat cop" threw him in the hole. The Post got a hold of the letter, and so now we have this priceless gem, which we'll be sure to unload one day on our own ungrateful, treacherous offspring: "You don't call those Rat Bastard's [sic] on nobody. Never mind you own father. What were you thinking? You are my son and you came from my balls and you should have known better." Now go get your shinebox and respect your father's balls, see?