Ridiculous penalty for changing plans!!!

Asked to change my plan to a lower plan due to affordability. I completely understand that less money equals less minutes and data BUT why am I then being charged an exorbitant penalty!!! The only reason i am given by Nomakhwezi Dlozi is that it is their protocol. Their protocol which does not protect the consumer. I have 2 contracts with Vodacom and this makes me want to cancel both of them!!!