Xiaomi India — Normal call voice problem

Address:

Mumbai City, Maharashtra

Hiiiiiiiiiiiiiii
Am Somesh kawade from Mumbai, Chembur 400074
Contact Number [protected]
In last Nov I buyed your Xiomi Note3 32GB V
But from last few weeks am facing problem
For incoming and outgoing call
When I speak on normal mode the person standing on another end of phone /receiver is not able to hear my voice or he get very low voice.
I have done hardwear mice taste too And result also came as pass
To trouble shout this problem I also visited your service centre in Ghatkopar that also 3 times
First time they changed mice, on second time they updated softwear and on Third time they kept my phone observation and all thre resons more than a week.
But still am facing the same problem.
Please trouble shut this problem .
And from this problem am not only person is sufreng
There are many peoples like me who is suffering from this issue.