Business ProfileforYour World Luxury Consignment Boutique

I pur*****d a sweater from Your World on November 16th. While checking out I was chatting with the cashier so did not pay attention to my total cost but fully agree that I signed a receipt (see attached image) for $327.81. However, the sweater I pur*****d was not valued at $304.09, I've since thrown away the tag but it was valued at around $20. A few weeks later, I was looking at my credit card statement and noticed a charge for $327.81. I disputed the charge through *****. ***** contacted Your World and then sent me the signed receipt and suggested I contact the business. I spoke with the owner on Jan 14 and she immediately accused me of lying about my purchase, "How do I know you didn't buy something else and forgot?" Which is a valid question; however, I 100% know I only purchased the sweater. I suggested she look at her inventory log to confirm the cost of merchandise sold that day. She did indeed confirm that the sweater was not valued at $304.09 but refused to issue me a refund and said "this is probably a scam and you spent too much money at Christmas and am trying to get it back." She was so incredibly rude, judgmental and is unwilling to complete an audit of her inventory. She asked what I think the solution is, I suggested she compare her log of merchandise sold that day to her cash register daily sales total and that she will see a difference in value. She said we will need to agree to disagree because she is a small business owner and hasn't taken a paycheck in 2 years and that I am costing her money. She also does not issue itemized receipts because she is "consignment". I acknowledge that I signed a credit card receipt for more than I should have been charged; however, I only purchased the sweater and was overcharged by approximately $300. A simple audit of her daily activity for Nov 16 will show I am not a liar as insinuated I am. She also berated my decision to dispute the charge through ***** vs calling the store.