Apple Card Making Payments on Your Balance

Why is it that when I make a payment from my bank and the payment is accepted by Goldman Sachs, the payment doesn't show up as a payment made? I called Goldman Sachs and they told me it takes 3-4 business days. All other credit cards I have, and household utility payments will be reflected within a day. I thought that Apple Card was going to be quick and easy and would post to my iPhone when the payment was made. I made a payment on September 9th and here it is September 12th and my payment is not reflected. However, Goldman Sachs says they received the payment of the 9th and there is no Balance due for September. Oh Well... Here comes another bug in the ointment.