opinions-roof damage and repair

[Rob Gribben]

I have a two year old shingled roof on a rental house in Dundalk, MD (Rowhome).  This past Saturday a section of the shingles blew off. We had winds in the 30-40 mph range (gusts).  The roofing company does not want to honor the repair under warranty.  I didn't see any other homes on the block with missing shingles.  I could understand if we had near hurricane level winds, but gusts 30-40, I think the shingles should stay in place.  I have a pic, can't figure out how to post it though.  Would you push them to cover the repair as part of the warranty?  I do have a 10 year warranty, but they say it's for leaks, not shingles being blown off due to wind.