UniverCell, Chennai, Parrys Branch — cheated me in new mobile

Address:

Chennai, Tamil Nadu

respected sir / madam.
my name is sundar iam studing in uk, three month before i brought a new mobile phone (C5-03) for RS 9,150 from univercell after one and half months later the mobile was not working i took the mobile to the univercell ,chennai,parrys branch. they said to rectif this problem it will take 15 days .but till today i did not get mobile. mobile went to repair and came after 20 days it has same problem i checked in the shop it self it was same problem and after 10 they said now u can collect the mobile . my father went their and checked angain the same problem again they said with in 5 days they will give back . but still now i did not get the mobile . now they are giving any responds now .please any one tell me what i can do for this .give me good idea please.

thank you


yours faithfully
s.s.sundar