Consumer Redressal

I deepak kumar, purchased sony xperia C 2305, on 20th of oct 2013. i have been facing problems in my mobile since last two months and every time submitted it to the sony care centre. but they are insufficient in solving the problem even after 3 times. every time they solve a problem another problem rises out. they are also not able to give a proper fixe to the technical fails. my job sheet no. are W114082201697 ( Dt.22-8-2014) ; W114090501190(Dt. 5-9-2014) ; W114091302061 (Dt.13-9-2014). the service centre registered as SHITIZ TELECOM , shop no.115, gf , AKD Tower, sec 14, gurgaon haryana. my mobile handset is still in warrenty period. i am afraid that with such problem resolving skills of the staff, i might not be able to use my mb phone after the warrenty period will be over. they are not giving a proper solution to my prob. please help me out sir.