Payment not reflecting

I made a payment on the 28th of April using the app and made another one on the 30th of April because the first payment wasn't reflecting and I assumed I'd forgotten to pay it. Turns out I had paid it and the money has left my bank account but the payment is is still not reflecting.

The second payment is showed immediately but the first one is on limbo.

Can't get through to your contact Centre. This is actually unacceptable.