Airtel — 59059 is asking to input application desk number?

Address:

Thavakkara, Kannur 2, Kannur, Kerala, 670011

Hi i have ported from bsnl to airtel recently. for activating my airtel sim i have called to 59059 it's asking me input application desk number i don't know what is that!!!. how can i activate my sim its more than a week now after i have ported my sim. when i try to call to my number it's responding like temporarly unavailable. can you please help me how can i activate my sim?????