Samsung — to change my samsung mobile (S 7582) reg.

I have purchased my Samsung model in august mmonth2014 at trichy at tamilnadu but my mob.switch off in running condition and not switch on, so I went your cre centre they repairer it but the same day the mob.speed slow down & instant discharged & (no accept data card )having been fully recharged so I ask your care centre told about that when I went their they refused to take ( in may month)it so requested u deposit it and change it my mob warranty period is also running plz accept my request my email -([protected]@gmail.com), imel no.- [protected]