McDonald’s complaint: Charged twice and horrible Service

Hello there I would like to complain about my experience at your location today. I order through the mobile app tonight and when I got to the window thr women told me that I didnt pay. I told the women I payed though Apple Pay and showed her on Apple Pay that I payed. She got mad and keeped saying I didnt pay so I said Ill pay for my order again. So she canceled my original order and I payed again but she took off my coupons of free a mc double and charged me for it. I payed with Apple Pay and my card and I asked why it was more expensive she keeped ignoring me and I told the other worked I had a coupon and asked if she applied it she said no and refunded the The Mc double in cash. When they finally handed me my order it had the wrong food in it my fries where the wrong size and I had a single cheeseburger and mc double which I did an order. Overall I payed twice and over payed for my food. They handed me cash instead of reimbursing my card and what should have been I 5 mins trip turned into a 15 mins trip that was a horrible experience. I would like a full refund for my food and overall horrible experience.