Woolworths Financial services - Total incompetence

Absolutely useless "missing payment" department! My monthly payment due on my Woolworths card is R368. On 5 Dec I made a payment on my FNB app of R4500, which, despite 13 emails and 8 phone calls, using 45 minutes of my airtime, has still not been credited to my card. I have had dozens of phone calls and emails and sms messages regarding my overdue payment of R368, but not 1 call back regarding my missing payment of R4500!! There is something very wrong with your customer service WFS. I will not leave this alone until something is done to compensate both myself and all the other customers that have to ensure total incompetence when making payments on their Woolworths credit card.