I bought a new Toyota C-HR GR Sports hybrid 1.8. I had a very poor handover of the vehicle. Parts were not fitted as well as accessories missing. However, on complaining it appears that some rubber plugs to chassis had not been fitted. My concern is that the car has been used in lots of wet weather over the winter months as well as done 2,000 miles, the plugs are now fitted and I'm worried that water, road salts and grit etc may have entered the chassis and then sealed in with the plugs and that premature rusting from inside the chassis may be accelerated due to this. Is there anything that can be done to solve this?