Airtime not deposited

I bought R25 airtime Tuesday evening through my mobile app.Airtime was not credited in my account. I call on Thursday, stood 20 mins over the phone after being transferred from pillar to post!! the last person i spoke to from cell phone banking, then refuses to help me, tells me I have to call MTN!!! how is MTN responsible when i did not even get my airtime..... I wasted 40Rand airtime trying to fix my R25 airtime issue!!!! how ridiculous of these people, im very bitter with this regard , i have statements and MTN already confirmed that no airtime was credited..... I want my money back, inclusive of the airtime i spent to contact you.... BANKS OF SOUTH AFRICA HAVE THE MOST TERRIBLE SERVICE, they do not regard anyone!