Airtime Disappearing

Good day Vodacom,

This is the second experience, where my airtime has disappeared. I've had enough now. When I buy airtime and when i want to use it then its all gone. This is not fair, customers should not be treated this way. Im not sure why this is happening. Why must I buy airtime all the time and when i want to use it, its gone... I spend quite alot of money on a monthly basis on this network. Money does not grow on trees Vodacom. Please sort this out today... This treatment is unacceptable,

Unhappy customer Chivarna