not proud new Mondeo driver

Yesterday I bought a Ford Mondeo, year 03/03, Turrnier TDCI with 130 hp. I actually (at least thought) well informed myself about the problems with the Mondeo. Also about the topic rust at the doors. During the visit I looked at all the doors and could not actually notice anything. When I cleaned the car once thoroughly, especially at the bottom of the doors, the result was of course: ROST on all 4 doors, sometimes stronger times weaker. Sorry, but like Can this happen with a 3 year old car?! I’m still driving a 7 year old Bora, WITHOUT rust. I read the Ford the cost of this rust problem, but only if you do the rust control regularly at Ford. That’s the problem now, the previous owner did this with Ford in 2004, but not in 2005, because he was in a free workshop. So Ford will be able to talk out nicely and I’ll probably stay at the expense. I’m really a I don’t think I’ll be able to find a “normal buyer” anymore…. Maybe someone can give me some more advice on what to do… Greetings Olli