Consumer Redressal

I purchased xolo q 900 in the month of november and in january there was touch issue which was resolved by the service centre nearly after 22 days. When i received my cell phone from 22 days service centre then there was a network issue has the handset was showing very low network or no network. So i again submitted the cell phone to the service centre on 17 th feb which i received it on 10 th march but still the issue is not resolved. Kindly advice....