Why is my MTN line not on its unavailable and the line is in my the

Please I want to retrieve my MTN line am outside Nigeria and my number is 08103986672, I need it urgent for my account in Nigeria. thanks

MTN incoming call record query on MTN line 07037447157

Someone is using his/her MTN line to dupe people.

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