****** AIRTIME/ OVER CHARGING AIRTIME

My father topped me up with R60 mtn two days ago. Since then i have paid back R6 to an airtine advance and have brought R15 worth of data (100 mb for the week). So logically when i go to make a phone call this evening i should have R39 left over. No. It has disappeared. Their call centre is RUDE AND UNHELPFUL. They try make up excuses like I have been using out of data rates. If that was true, why do i still have 67 mb??

LYING *****'S!! Why do you think it is okay to ***** my unspent airtime? It always happens R2 here and R3 there. But R40 is unbelievable Mtn. I mean seriously?????