Vodafone — Upc cannot be generated as there are subsisting contractual obligations with your service provider

Hello,

Service has been very bad since last a few days. Nobody is answering properly and don't have any solution to anyone. After multiple discussion with customer care, they only send a message that this will be resolved in 72 hours but nothing happens in fact they message me that your problem has been resolved. When I tried to port my number, I am getting below message.

' upc cannot be generated as there are subsisting contractual obligations with your service provider'