Motorola — Phone hangs on the incoming call

Address:

Thane, Maharashtra

i have moto g 2nd generation. phone hangs when its keep in the ideal n suddenly call came then i cant able to receive call. i go to the customer services center but they also dont have any idea about this problem.they take more than 30 days to give me my phn back but after that also same issue occurs.my phn is still in service center.