Apple India — Iphone 7 mic fails 3 times in 20 days of purchase

But iPhone 7 on 24 march 2017, but yet not used much . Till now it was in service centre "F1 in Nehru Place New Delhi " for 10 days
First submitted on 26/03/17 they replaced some part and returned it on 01/4/17. Again same problem faced and submit it on 10/04/17 Got it back today afternoon but still problem is same
Wastage of money
Worst quality
Harmeet Singh
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