Why is my mtn line not going through

My mtn line is barred 08100472243 how can I unbarred the sim?

I have not been able to recieve calls on my mtn line since I came into UK, please help 07039628487

Why is my Mtn line blocked

I've been trying to send messages on my MTN line to no avail, I've checked the message centre no severally and it's correct, what can I do ?