CHECK YOUR VODACOM STATEMENT

Found out yesterday that Vodacom actually charges you a monthly fee for numbers to appear on your screen when you receive phone calls??? How could they charge you for information that you have entered (i.e. you contacts) on your phone that you pay for every month. We take out contacts from Vodacom with the intent to get a cellphone, airtime / minutes and data, not to be charged for all these extras that actually have nothing to do with them? How many people are actually unaware of this?