Apple India — New iphone defect piece

Address: Mumbai City, Maharashtra, 400066

I bought new iphone 7 2 weeks back, however i felt the entire display of phone was very dull, yellow nad pale. Later the camera quality became poor nd yellow, slow motion camera became pink while recording.
I have already given the phone to service centre and asked for a replacement. However after 3 days they said that the banglore team has told it can not be replaced however the defective camera will be repaired.
I am not satisfied with this approach. I have paid 60 k not to use a repaired phone in 2 week of buying.
Request to please contact me and resolve the problem.