Hello nairalander, what do I do in this situation?

I enrolled for NIN many years back, around 2013. I was given the invoice and I left as I saw other people who collected the invoice leaving. I never knew I was supposed to be given another slip which should serve as temporary NIN. I have always thought that the slip issued to me that day was the temporary one until I wanted to use it in the bank as an ID. The bank staff told me that it was not valid and that I should go and collect the temporary one.
Now the problem is that this is many years later, I enrolled in IMO state and I am now in Lagos. One certain time that I was in IMO, I tried going to their office but the security guard refused to let me in, he said unless I received a message from them to come and collect the plastic ID.

Please can I enroll for another one? I heard it's only once that an individual can enroll. I am stucked and not knowing what to do. Most times when applying for work, I will be asked to provide my NIN and I can not because I know that the invoice I have will be rejected. Recently I was trying to register for Nigeria Immigration Service but I stopped when I got to the section to enter NIN.
Please any useful information will be highly appreciated.

Just dial *346# on the phone no you used, it will bring your NIN for you. Also go to any of there office with that first slip and tell them you want to collect the second slip

Just dial *346# on the phone no you used, it will bring your NIN for you. Also go to any of there office with that first slip and tell them you want to collect the second slip

Thank you so much