Dunning Harassment from Woolworths Store Card

If you have a Woolworths store Card then you will be subjected to an aggressive dunning phone call regime should you be late in paying off the store card I have just been subjected to 5 calls in one day from different people supposedly offering me assistance but when I ask what assistance all they want to know is when am I going to pay. when I requested that I not be called I was refused this request.