Karbonn Mobiles — Not repairing handset

Address:	New Delhi, Delhi
Website:	karbonnmobiles

I had submitted my handset 3 months ago and still don't get it back, every time i call them they just postpone the date, i submitted my sparkle v on 31 august at dakhsya international services rohini delhi. there is only issue of speaker but they mentioned that the phone is dead in jobsheet.. and also doesnt chnage my charger and earphone despite of being in warranty
jobsheet no=kjaspdl11481skr22688