Vodafone India — Porting rejected with unknown reason "the number or range is in contractual obligations"

Address:	500037
Website:	vodafone.in

I have applied for porting my mobile no. [protected] (telangana/andhra pradesh circle) from vodafone to another service provider with the port code given was va114933 valid upto[protected].in order to proceed further, i have cleared all my bills and paid rs. 100/- extra on[protected]. on[protected], i got an sms indicating that my porting request has been rejected due to "the number or range is in contractual obligations". i'm not sure what is the extract reason for rejection. i called 199 and discussed with couple of call center persons to know the reason but unfortunately they also not aware of the reason. please look into this and do the needful for successful portout from vodafone to another network.