Sony India — Same problem persist after repairs

Address:

Indore, Madhya Pradesh, 452010

Hi, I''ve purchased Sony Xperia M4 Aqua Dual in November 2015 on Diwali. As it was Diwali i was busy in household works and thus havnt used the new mobile a lot except clicking the pictures. but after 7-8 days of purchase i got to know that the caller on the other side is not able to hear my voice. No matter how loudly I speak. I called the customer care they asked me to go to the service centre. I was against this. Who takes a 10-15 days old phone to the service centre. It took me 6 months to buy a 20K Rs mobile. Still I took it to the service centre. They kept my phone for almost 3-4 days. After that also the same issue was there. I again called the customer care people. They ask me to go to the service centre again. I was very disappointed. Again i took it to the service centre. They updated the software but nothing happened. It happened again.Thus I took a newly bought phone 3 time within 1 month of purchase to the service centre. 15 days before my phone got hanged of no reason and got started in 5 hours. yesterday night again my phone got hanged. My earphones are no more working. Earlier i used to talk with the earphones as the callers were not able to hear my voice. but few days before my earphones also stopped working suddenly. I dont find a logic to call their customer service and go to the service centre again. The last hope is you guys. Please help me if you can.
Regards, Divya