Sony India — phone not returned on promised date

Address:

New Delhi, Delhi

i bought a sony xperia z ultra phone within a month its touch panel cracked without any apparent reason then i submitted it to sony authorized service center at janak puri new delhi on 28 may 2015 my job sheet no. is W[protected]. they said this phone can not be repaired and they will change it to a new set if i agree to pay 50% of the mrp of the phone i agreed and they told me it will take 10 days i said ok and also confirmed when they called me to confirm the estimate. now its been more then 20 days and all they have is excuses i am very disappointed. I want Sony India to look in to this matter and solve this ASAP.