Apple India — repair issues

Address: Ghaziabad, Uttar Pradesh, 201010

Have submitted my iphone 6s twice at pacific mall ghaziabad all problems are same in fact the battery problem have increased. They just gave with a new software update i am not at all satisfied told the phone will be repaired in 3 days got after week that to after calling and visiting no if times but problem of hang, battery drain, phone gets too heat up all are the same