I decided to make this post after seeing how these Network providers are renewing their data plan without the awareness of their subscribers. Here are the ways of cancelling auto renewal on all Network
To cancel MTN data auto renewal, send NO to 131
You can also dial *123*5*1# and reply with 2 to see your active subscriptions. Reply with the number of the active data that you want to cancel its auto renewal and then follow the instruction.
To cancel auto renewal on Glo, send
CANCEL to 127
Dial*229*0# Or send STOP to 229
Send STOP to 141 to cancel data auto renewal
All the above methods should be done before the data plan expires