Unable to send sms from my mtn number 08066595946

Why my MTN no sending SMS my number is 08131093097

I can't make, receive calls and send SMS.

Can't send sms in my line 08038283713

Ever since I entered UK in Oct 4, there's no MTN signal in my phone, I lived in uk and line has been roamed and about 4000 naira was paid to let my line to stay active yet i...