Hi Solomon, you need to contact MTN support to assist you on this.
You can contact MTN support via any of these channels
Twitter: @MTN180 / @MTNNG
Facebook: @MTNLoaded...
You can link your NIN using any of these 4 ways:
1. Dial *785*Your11 digit NIN# free of charge and follow the prompts.
2. You can also submit your NIN to us on MyMTN app. To...