Halo Bro,
Yes, u r right, u shd bang table till Nissan Japan.. :) Nissan actually can claim back from their OEM body sprayer who did the painting for them.. and it shld b FOC. Looks like u hv been blocked mayb by TC Sg, ur message might not get to Nissan Jap. It will be good if they have replied to u officially (by email or letter eg. the Super Chao or Shu, haha), and then u can argue with them more effectively with your professional experience/views... :)
Happened to me once on my front dashboard center console/cover (the one covering the aircond, radio), where kena some of my perfume liquid and it actually "eats/attacks" til the plastic substrate area, but managed to get them get it replaced FOC when I argue from coatings point of view.. hehe.. me also a chemist background (chemistry). Btw, i hv dealed with TC Ubi all the while for my servicing, service still ok to me.. :)
Good luck to u..