This seems to be coming late because I’ve been somehow pre-occupy over the weekend while leaving some of your questions unanswered but you can rock with this and it’s been rocking since yesterday. Lets hope it last a little before it will be blocked.
You can actually make free calls with your glo line to any network by just dialing a simple code but it seems to be sim selected, so if you have a glo line, give this a wet lips
How Can I Make Free Calls With My Glo Line?
Just dial *170*26# as many times as you can and call any networks in Nigeria
I don’t know how long it will last but you can keep flexing it while it last.