Common blockers: name/date-of-birth mismatches between NIMC and MNO records, duplicate NINs, or SIMs registered under old IDs. Barred lines persist because automated reconciliation fails until a human flags your record.

Fix sequence that works: (1) At NIMC, request the printout with QR and correct any biodata errors; wait 24–48 hours for propagation. (2) Visit your network's service center with the printout, old SIM, and valid ID; ask them to perform a fresh KYC capture against the updated NIN. (3) If still barred after 24 hours, perform a SIM swap to a new chip — it forces the profile to rebuild. Keep the ticket number, and escalate on Day 2 with the ticket + NIN slip; most lines restore within 72 hours. If your SIM is in a MiFi/router, test in a phone to confirm service actually returned — some devices cache the barred state until rebooted.