Lenovo — Lenovo A6000 phone network connectivity issue

Address:	382443
Website:	lenovo.com

I have bought Lenovo A6000 in the month of March 2015. I faced problem of wifi and network connectivity. Mother board of the phone was replaced by service centre and solve the problem of wifi connectivity. After several remiders to Lenovo officials on email and to service centre persons as well, i didnt get solution to the problem of mobile notwork connectivity issue. 3 times mobile submitted to Lenovo service centre but no solution found. Several mails were writtened to the Service Director and support team to replace the phone if no solution found but i didnt receive any reply from them. I need support from consumer support team for necessary solution from company.