Sony India — Mobile phone having repeated problem

Address:

Ahmedabad, Gujarat

I have purchased Sony experia z3 compact. Phone is under warranty. There is problem in speaker and during call, other person is not able to hear properly what I speak. I have already send phone once to the authorized station. It got returned after 15 days but problem is unresolved. I have again submitted my phone to the same repair station since more than 15 days now but I have not received my phone back. I am requesting for new phone but that they are not responding. Tired of pathetic service.