Noticed their "new paint" job flaking off after ju...

Noticed their "new paint" job flaking off after just days after I starting using the truck. Definitely done by them and not a pro. No primer coat was used that I can tell... Also underside of vehicle was spray painted black, shocks, moving parts...to try and make it look good. Painted over the rust, dirt, and mud on the underside, so now I'm worried it was driven on a beach or around saltwater and maybe someone tried to cover up some bad rust.