Vodacom is the worst network

Vodacom is the worst network to belong to, the data keeps on disappearing even though i am on Wi-Fi 99 % of the time it keeps on saying out of bundle usage even if i am connected to a WI-FI. It is impossible to load your recharge vouchers that you buy at shops and they want to help you with the help of a robot that are not able to fix the problem why cant we talk to a human to sort out loading issues one cannot load bundles on the *136*01* as it never takes the vouchers it keeps on saying invalid MMI. Vodacom do better please And stop *****ing my hard earn money