Consumer Redressal

I have purchased one of your product Micromax Canves Model EG111, which is CDMA+GSM. But while using the CDMA RIM, Facing the problem in Call Conference, I had already using the Call Conference Service in my old Mobile and i had twice checked with Service provider, everything is activated from there side for Call Conference. I had inform/complaint the same on the same day of i have received the mobile from Dealer. I have advised to visit the Service Center, I have visited to Service Center at E-3, Kalkaji, New Delhi and person at service center do the troubleshooting, reset at factory setting ,update the software, but problem is still there. Person is saying to submit the mobile and they will replace the board/chipset and saying that after that also not 100% sure that problem will be resolved. Same thing i have communicated to the dealer, dealer is saying that company will provide you the refund if facility is not there in phone. I have purchased this mobile 10 days back only