Brake Disc Pads problems of the 2009 Ford Ranger

I brought my 2009 Ranger to the dealer for a safety inspection and oil change and during the inspection it was noted that the front brake rotors had substantial pitting and scoring on the in-board side of the rotor. The vehicle failed inspection and required replacement of the rotors. It was noted that the pads showed only 30% wear and the vehicle has only 27159 miles at the time of the service. I haven't found any other mention of these factory rotors failing in such a short period of time and never in all the Ford and other vehicles I've owned would the rotors need to be replaced after so few miles with so little wear on the pads. I had the parts saved and there are pieces missing from the surface that look to me like large flakes of the surface had worn away from the assembly. I'd like to know if this has been a problem for anyone else with this brand of factory installed rotors.

Immediately after purchasing 2009 Ranger XLT, noticed excessive dirt on front wheel rims. Complained about it to dealer first time I took the truck in for an oil change, also complained that I wasn't getting mileage expected. Was told it was just brake dust, it would easily come off with tire cleaner & hose, & truck needed to be broken in for mileage improvement. I kept complaining that brake dust seemed excessive to me, never had problem before. Installed ceramic brake pads, didn't help. Within first year noticed steering wheel vibrating & dealer said I had to have new pads & rotors $400. I complained again that something else must be wrong with brakes. I don't drive dusty roads, don't ride the break, don't drive excessive miles (72,000 in 5 yrs. ). Within 6 months noticed steering wheel vibrating when stopping, soon needed pads & rotors again. Have had to have 5 brake jobs in last 5 years costing me over $2000. Have taken it to Ford dealers & independents each telling them I want it solved, not just to slap on new parts. No one bothers to listen to me, charge me over $400 each time & 3-6 months later the rotors are warped again and brake pads wear out soon after. "brake dust" had ruined rims on the truck.