Vodafone — UPC is not provided for porting

Address:

Pune

Idea-vodafone service is very pathetic in my area. So, i want to port it to others network but vodafone custome is not responding to me at all. I got below msg when i sent it to 1900 for port and they are not responding to any of my query. Below is the message ;
Upc cannot be generated for the reasons: (1) there are subsisting contractual obligations with your service provider. Please contact your service provider for further assistance.

Please let me know how to proceed on this and to get upc which will help in porting.

Thanks,
Vikash