Shocking treatment Woolworths!

Sunday 30 Oct I go into Woolworths Centurion mall to pay my account. Lady advise me to swipe my Woolworths card and then my bank card which I do. Monday no payment reflect and advised to call back Tuesday. I call back and after a call to the branch am told its an error and instruction sent to finance to allocate the payment. Day later I get a mail that its my fault for not capturing the correct reference nr as if I capture on their terminals. But finance will allocate the funds in 2-5 working days. I reply noting it is a staff error /system error. Friday I get a mail no more rectifying and Woolworths will not allocate the money paid over by my bank. So they are happy to just take my money. How many clients are they doing this to! This is shocking from a retailer where I can proof payment from my bank account to them!