DATA AND AIRTIME DISAPPEARING WHEN IT IS BOUGHT ON PRE-PAID

DATA AND AIRTIME DISAPPEARING WHEN IT IS BOUGHT THIRD TIME NOW!!!!!!!!!!!!!!!! - Noticed everyone is complaining, well I have exactly the same complain was just told to download a Data usage app, where in your life???? I already have two installed because of VODACOM's response of airtime and data disappearing loaded 1Gig of data on the 23/04/2018 only whats app was used it is gone.... Had R149 balance of airtime loaded another R110 on the 2018/04/24 two hours later and it is all gone.....Vodacom is lacking big time and is really getting overpriced and the help from their centers is a no go no good service. Ref: 1/ ********** ********** and evertime they just say o sorry your lost no ways not anymore going to move over to another network.