Sometimes when we suscribe for a service on mtn such as mtn music, mtn game blackberry subscrition etc,they are autorenewed and these services ends up cutting our credit even when we don't nid them, it is very frustrating when you recharge and your credit is taken without you knowing why. Well, to cancel these services :
Just dail *123*5*1#
Then press 2
Follow the on screen instructions.