How can I know that my phone is not cloned?

I have a SIM card that I don't know it's phone number again and the SIM is barred, what do I do to get the number? Here is how the sim serial ends: 40115307

My name is Felix I want to work as and agent in the network but I don't know how to get started my phone number is 09068110059

how do i disconnected number in my NIN that i don't know

Date of birth on my...