Need Radio Unlock Code for Micra Visia 2012

My radio of Nissan Micra Visia (2012) is locked after I sent to garage for clutch repairing.
After trying 3 wrong code, it kept me waiting for 60 minute and showed me following information:

Serial Number: 2406288
Device Number: 7612830051
Date: 11.09.13

After 1 hour passed its again asking for the code.

Please help!!!!!!!!

Thanks in advance!