Why spend to dispute a loss due to your technical error???. What's the point????

I brought airtime through my Capitec banking app and the money went off my Capitec account but I didn't the airtime on my phone. When I called my service provider I was advised to call ***as it is the capitec support number. I called the number all to find out I was getting billed for the call all along. To make it even worse, my airtime ran out before I could even get assistance, so what do I do now? Must I buy another airtime to call again? Then the same thing happens? More loss???? What's the point of banking if my money will elapse without spending it???? I mean what is the point of disputing if I'm gonna spend more than what I've lost on disputing. Can capitec please call me back on *** else I'll publish another post until my query gets resolved and thanks.