Woolworths store card frustration

I made an EFT payment on my store card on the 2nd of July. On the 4th of July, I realized I made it using a wrong reference number. I phoned them, and I had to send my proof of payment to the accounts department, which I did and they confirmed that it is logged to make the credit adjustment and that it would reflect within 24 to 48 business hours.

Long story short, I phoned again the 8th to follow up, and was told that there was a backlog and that it would take another 24 to 48 business hours. I followed up on the 11th again, and they apologized and now said it would take between 2 and 4 business days and that this consultant would follow up personally.

Nothing has been credited to my account and it's been 2 weeks since I informed them about the mistake and sent my proof of payment. In the mean time I have been debited the monthly fee which wouldn't have happened if the did the adjustment when they said they will.