customer service Woolworths

Woolworths WANTS you to buy on credit. They keep reminding me that I have R 29.002,00 available, which is not important to me.I have a storecard and SOMETIMES I pay with this card because WW 'adds' a benefit if you pay with the card. Since 1 July, there is an account charge of R 47,50. (very easy to 'miss that one sentence on the statement!) But if you pay your account in full before a certain date, they won't charge you. That date however is not the same as the' pay by' date, as I found out later. So, I paid the total outstanding amount on 11th of September before I got my statement. The next day, 12th of September, the statement arrived in my inbox, with a charge of R 47,50 included. They 'argued' that billing was done on the 11th, same day I paid. They are 'fighting over R 47,50!! (so am I of course). I must say however that the service of TOWNSQUARE WW always is outstanding.