Airtel — ported out of voda but no service

Address:

Mumbai City, Maharashtra, 400080

I have a cug card i opted out of voda and ported out its been 10 days and i can not have any service on my airtel sim card. As a student this has been the worst professional service ever and i strictly am not going to let this go through without attention of legal authorities. It's been over 10 days. I used to get calls from airtel everyday to port but ever since porting not once have they tried to help. What kind of professionalism is this? Is this how you treat your valued post paid customers?