Unprofessional

I needed a bank confirmation letter on Wednesday, 19 Jan, went onto the app, got a "system unavailble" message. I then tried online, same message. Today, 20 Jan, I try both platforms, and still nothing. There's a message on the app that provides a number I can call (this letter is super urgent, now, so I call.) Was I not kept on the line for 6 mins after punching in my ID number as prompted? No recorded message to say my call is in line - just silence. I put my phone on speaker, and carried on with work, 6 mins later and I was shocked. FNB fix it. Fix that line, and get the bank confirmation system working, please.