My lumos switched off completely without showing anything even after being recharged it hasn't switched back on

Hi Sunday, you need to contact MTN support for assistant on your Lumos issue
You can reach out to them via any of these channels:
1. MyMTN App
2. Facebook: @MTNLoaded
3. Instagram: @MTNNG
4. Live Chat: http://bit.ly/2OC5bHz
5. Email: customercareng@mtn.com
6 .WhatsApp: 09033000001