Account payment not reflecting

I went into the MRP home store in Rosebank yesterday. I used my credit card to pay the monthly installment due on my MRP Money account. I then wanted to use the money I just paid into the account to make a purchase. However the payment I had just made, did not reflect in my MRP account. <br> <br> I was very disappointed with this. I often pay my accounts at other retailers and the credit card payments reflect on the retail account immediately. Why is this not the case with MRP? I was told I would have to wait 24 hours for my credit card payment to reflect. Needless to say I ended up leaving the store without purchasing anything so you lost out on a sale too.