Scratches should polish out, provided they aren’t too deep and they don’t ‘catch’ when you run a fingernail over them (the fingernail test).
Provided the paint chips aren’t right through to the metal, you shouldn’t have any rusting issues - they may just look a little unsightly, depending on how many there are and what the colour of your car is. If your car’s a dark colour, paint chips will show up more, as VAG use light coloured primer coats when painting car body shells in the factory.
Can you not repair the paint chips yourself - either with a Seat paint pen or equivalent from the likes of Halfords, various on-line sellers or alternatively, buy a Chipex repair kit? One of the first things I buy when getting a new car is some touch up paint to deal with the inevitable stone chips which unfortunately are an inevitable consequence of poor roads and water based paints. Repairing stone chips is part of my post-car cleaning routine; if I notice any new ones when I wash / dry my car, they get repaired there and then as I don’t like to see them.