You have 4 options the way I see it. Alan's Idea of a refinish is probably the cheapest and easiest. That also gives you the option to have them finished in a colour or shade which compliments or enhances the colour of your car.
The other options are, as suggested, do an email "rant" to Hyundai with photos, dates, etc. The squeaky wheel usually gets the oil.
Try and source some good second hand ones cheap.
Choose some new or second hand ones to replace them. Some aftermarket wheels are just as nice or nicer and usually much cheaper than factory ones. The I30 stud pattern is a very common 114.3 x 5 which helps.