my paint is chipping

[chevymadness]

I got a new paint job about 6 months ago and its already freekin chipping it is chipping on the fender ends well there cracks but im sure if i kick it there would be brittle chips.All of a sudden when i was driving it i looked to the side of my bed and theres a hole! the size of my pinky nail.I could even see the white primer underneath.I was told he used cheap primer and i have a feeling he did he was not a great painter and charged way to much he didnt even put a thick layer of clear coat. He just sprayed clear once it seems and its not even under the lips of the fenders.Im going to have to clear coat it again but i dont know how to take care of this problem the paint seems brittle should i say i think its the primer.I live in texas where it is hot also so the sun doesnt help.. i figure i should put a thick layer of clear coat and protect the paint

i will try to put pics asap