Bharat Sanchar Nigam [BSNL] — Cannot get UPC for MNP for a BSNL sim even after calling customer care

I cannot get UPC for my mobile number after sending port request. All I'm getting is
Request for UPC for your mobile no. [protected] could not be processed. Please retry after some time.

Or

Your request for UPC has been delayed. Please wait while your request is being processed.

I Tried calling the customer care. 1st time they said to wait and try after 2 hours, 2nd time they directly said to wait for 24 hours, if I call the 3rd time I think it will go to a week.