Makro baby soft special

Very disappointed that I was denied a rain check at Makro even thou they never had stock for a long time with their R100 of 24 baby soft toilet paper, i am told that i should have had my name written down earlier but no one told me that when I went earlier. The special ends today i know but that's the only time I got to go back and check however I don't understand why my name can't be on waiting or rain check be given on the last day of the special as it's not written anywhere.