BALANCE STILL THE SAME - PAYMENT THAT I MADE NOT REFLECTING ON MY CREDIT CARD

I made a payment of a large amount from debit to my credit card, and 5 days later the amount paid is still not reflecting to show that payment has been made on my credit card. Am also not getting assistance as what happened to that money. It only shows on my debit card transaction history and not on the (destination) credit card. May I urgently please assistance as this will affect my monthly debit YET I had made the necessary payment to reduce the monthly deductions?