Samsung SGH-I450 — Samsung complaint

Dear Sir,
I have purchased Samsung SGH-O450 BEAT series on[protected] from authorized dealer at Bharuch (Krishna Mobile, Gujarat).
I am suffering one big problem of recharge socket. I cont recharge battery through charging socket and can not use hands free& data cable also.
I had shown the instrument at Samsung service care at Baroda but that respective person told me that socket is detached from circuit. he suggested to replace whole circuit and he charging me Rs.7500/- for this. But my mobile is in the warranty period.

As my mobile is in warranty period this service should be free of cost. My mobile cost is Rs.11499/- and it is charging about half of its cost.
So please do the needful
Thank you
Yogendrasinh Parmar
[protected]