Why did blocked my line when I have already linked it with my nin

Can I recover my MTN sim that is lost that I did not link any nin to it

I was told my line is blocked and I needed to link my NIN to it which I already successfully did, yet I can't still call/text or receive on the line. Kindly help, please. My...

I was told my line is blocked and I needed to link my NIN to it which I already successfully did, yet I can't still call/text or receive on the line. Kindly help, please. My...