Its was indeed annoying seeing that MTN eventually had to remove money for Whatsapp subscription I did a month ago when I was temporarily out of data but I have sub. now and wouldn’t have expected to subscribe for Whatsapp separately again. Well, it happened and I had to quickly use the code in the post to deativate further occurrence.
Code to Stop Android WhatsApp Monthly Subscription on MTN
To deactivate Whatsapp monthly subcription from auto renewing, send StopWAM to 131 or dial *446*11*3*3#. You will receive a confirmation message that you have unsubscribed.