System ****ches

So I bought airtime worth R75 on the app,and it showed error that the transaction could not be processed but money was deducted from my account even though I did not receive the airtime,repeated the same process again,still error and another R75 deducted with no airtime received then R50, I need my money back asap else I am taking my salary to another bank next month, this is not the first time this happens, I had to transfer money to Capitec to be able to buy airtime, I don't trust this system anymore