Day light *******

Yesterday I went to Woolworths at waterfront. The supervisor who his name is Gershwin said that my items were on sale 2 weeks ago on 40% on black Friday. I bought them a week ago and I lost the receipt. I paid the normal price not the sale price. Just because I lost my receipt he told me that I will get my items for 40% which it's a ******* and that's not fair because the items are not on sale and I had to pay the difference because you Woolworths took my other money. You are robbing people it must stop.!!!