Question about painting metal door
We're having a house built and some of the exterior doors came pre-primed and ready to paint. (I think they are steel. If it matters, I will find out for sure) The painter painted the doors and this weekend, I noticed a small white mark on one of the doors. I thought something had gotten on the door, so I took my fingernail to lightly scratch it off and the paint came off the door. The white spot wasn't something on the door, but a place where the paint had gotten bumped off already. I lightly scratched some more and it very easily came right off! So I went to a spot in the door where the paint was still on, lightly scratched on the paint and it too came off. If I wanted to, I could easily scratched all the paint off the door. My question is, what went wrong? I talked to the contractor this morning and he's going to talk to the painter today, but I'm afraid these doors are ruined. Any advice/opinions would be greatly appreciated. Thank you!