@AhmedAliQureshi, get the paint of that specific area removed with a paint stripper. Smoothen the area out, primer it and then apply paint.
I would suggest you get it done from someone who knows what he is doing, and do it as soon as you can before the rust spreads and affects other areas.
Don't worry about it, and don't take that your car is tsunami affected seriously they just have a lot of time on their hands. Just take measures as soon as you can.