I need a retrieval Otp access

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...

Need help on how to either get an otp or how to get my my mtn number rooming on tmobile network

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...