Hi Chijioke, Sorry that there is no network in your area, you can contact MTN support for assistant.
You can contact MTN support via any of these channels
1. MyMTN App
2. Twitter: @MTN180 / @MTNNG
3. Facebook: @MTNLoaded
4. Instagram: @MTNNG
5. Live Chat: http://bit.ly/2OC5bHz
6. Email: customercareng@mtn.com
7. Call Center: 180 or +2348031000180 (if you are calling from abroad or another network)
8.WhatsApp: • 09033000001