I've good exprience with Mossberg customer service once I finally made it past the automated greetings and such.
Only downside is they aren't big on communicating past the intial contact.
As in, I talked to them, shipped my gun to them, and didn't hear anything out of them until the FedEx guy came knocking at the door.
NRA Life Member
Big Sister: "Everyone in America is fine with the .30-30, except Mack. He has to shoot that .35 because that extra point zero fives inches will matter on Bigfoot."