Vodafone — UPC code not getting from Vodafone

I am trying to port my current Vodafone number. But when I try to get UPC through 1900 it shows the quoted response.
"UPC cannot be generated as there are subsisting contractual obligations with your service provider. Please contact your service provider for further assistance"

I contacted customer care and as per their suggestions I have visited Vodafone store but they are unable to do anything regarding this. Their version is my number is under government scanner due to connection more than 9. Checked tafcop, it shows my 3 numbers only. So tried to port my other number and it was successful. How my only Vodafone number is coming under government scanner. Please help me out.