1/3 of the O/C shingles faded after a few years, and O/C will offer replacment of a few of them (not all of the faded ones!) and I have to pay for all installation and materials. My bill will be over

I had a new roof installed in January 2015 by Baker Roofing using Owens Corning 3-Tab Supreme Shingles (Onyx Black), which were advertised as a 25-year roof. When I later added a garage to my house, t