Consumer Redressal

I want to port my Idea number 9873668607 In Vodafone and I call to Vodafone helpline for send executive to collect my documents and I submit all related documents to Vodafone executive on 19-01-2013 with port ID235723 but I received a sms on 28-01-2012 Your Porting request ID235723 dated 28-01-2013 has been rejected by your current operator due to there are subsisting contractual obligation from the subscriber agreement. from Vodafone. I already clear my all Unbilled amount and I have not done any agreement with Idea. This is not first time I already submit port request to Vodafone on 08-12-2012 that time also reject. This is my personal number and It is register on my Name before port I use this number In JBM Vodafone Corporate . I Port this number in Idea in July 2011 Now I want to move again in Vodafone but This time I am not able to understand the reason behind the rejection of my porting request. So Please help to port out I don\'t want to continue my number with Idea .