what happened to my money for airtime?

on Thursday 31march I made two transactions from my mobile app for data on my phone!2 R12 for 30mb data...the app said transaction failed but my money DID GO OF MY ACCOUNT!!!(i did receive a sms aswell)i phoned vodacom about it but got told i must contact standardbank...my first call was about 30min and i made a second wich was for 20 min....no one could help me and wanted to put me through to another department...i told them that they can call me back because ive wasted enough money on calls and i got promised that i will be contacted within 30min...THAT NEVER HAPPENED!!!!!<br> so i left it and tried to load data again....same story.....<br> will i be refunded for my airtime that i never received????will i get my money back????IS IT SAFE TO USE THESTANDARD BANK APP???