Capitec System is a pain

Their entire system is a pain. I bought electricity via their app, the system sent me an error message that it could not process my transaction and that I should try again, Just as expected for a normal person to do , I checked the balance before I tried again the whole process happened five times, and only when I tried to do it for the 6th time I saw that now had insufficient funds???

Checked my phone for voucher numbers and there was no notification whatsoever. I had to call their customer care who could not assist me.