Dent fixed but how to fix the crack paint
 

I got 1 dent fixed today by aventa $120 + tax. Worth the money, great job.

My question is since the dent pop back up and the paint started crack a bit like 1 inches and is like a scratch to me. To clear that it is not the paint cracked in pieces and started to peel off, maybe is the clear coat. I am not a professional I don't know how to judge but is like a scratch to me I repeat that. The guy try to polish it with his bare hands. Can't fix the problem. Now how do I fix it by myself? I don't want to spend another 100 bucks to paint the whole panel. Use scratch X?

Please advise. Your help is greatly appreciated!!