[Resolved]  Tata Motors — fraud done by dealer & quality issue in the car

I bought my TATA Tigor from Tata dealer Concorde motors Mohan Cooperative Delhi. They took Rs 671896/- from me(Rs 541896 as cash and Rs 130000/- for my old car) and given me receipt of Rs 637871/- only. From last 45 days i am asking for the difference amount but they are not clarifying the same. I have mailed to dealer as well as to TATA customer care but of no result.
Also there are many many minor issue with the quality of car.
left rear side door is scratching the body.
harnessing for seat belt is lying open.
Boot upper side cover is missing which result in all harness inside open.
Door alignments are not proper which leaves uneven gap at many place.
I am following them from last 45 days but no result.