I had the exact same problem with my black Felix rogue. 1 zipper pull fell off which my SA sent along with the bag, it only needed a new pin to secure it. Instead repair took the good zipper pull off too and replaced both with gunmetal even though the bag is black copper.
Coach Repairs sucks, they also messed up my black/burgundy link rogue tote. The threading popped loose where you attach shoulder strap. Instead of restitching it they cut off what was loose. They then shipped it back to me folded in half, no stuffing in bag, in a tiny box. My bag that I had only carried for 30 minutes before sending in came back with a ton of scratches, scuffs, and color loss on a corner.
I will never use Coach Repairs ever again.