Hyundai — Asking for additional amount for exchange of mp3 player

Address:

Goa

I Mr. Pankaj V. Amrujkar have purchase Hyundai I-10 vehicle from Alcon Hyundai, Goa on 2oth of August 2009 bearing vehicle no. Ga-04/ C-1760.Mp3 player of Kenwood Nippon Brand has been fitted during the purchase by the dealer 'ALCON HYUNDAI' Goa. it was under warrenty period of 2 years from the date of fitment.My Mp3 player was having continuos problems which was brought to the notice of the service engineers of alcon hyundai.and everytime they were servicing it.But the problem was not ever solved till the end .Lastely they came to the conclusion that it cant be repaired further.
It was then handed over to them 2 months before the warrenty period for exchange.
Meanwhile it was brought to my notice by some more customers that the mp3 player of this brand fitted on their vehicles are also having such types of continual problems.
This was then brought to the notice of the technical advisor and i refused to accept the same brand of Mp3 player on warrenty.I requested them that in such case they have to replace the mp3 player with some other good quality brand. i was ready to pay the difference amount for the change of mp3 brand.
They agreed for my proposal but they are reducing the amount of mp3 player as per their purchase price and asking me to pay the difference as per the selling price of mp3 player of other brand.Actually as per my knowledge, if they are considering their purchase price then the difference in the price for the new mp3 player has to be calculated as per their purchase price.pls look into the matter at the earliest.