How can I retrieve my mtn line back

My Mtn sim has been displaying emergency for a while now, I need it to Acess so many apps, I also think someone else is in possession of the number as I have observed some...

How can I retrieve my MTN line in UK

How can I retrieve my line. Am not in Nigeria but need my sin for my online banking transaction

I need help retrieving an important message sent on my MTN line. I cannot access the sms, but I can still use my line for WhatsApp messages. Please advise me on what to do. I...