took money twice

I paid a beneficiary this morning, and payment went of twice. Capitec say i must phone the business to pay the money back. that was not the business of my fault, the SMS come throw seconds apart. this is Capitec fault, the app is not working. Really this bank is the worst I have ever been. gone move to a bank that can assist me and can admit they it there fault. I phone as soon as the second SMS come throw,