VividSeats Bad faith. Never use. Chicago Illinois

I placed an order by mistake. I contacted Vivid Seats literally within minutes of placing the order. They refused to cancel the order, even though they won't even be electronically delivering the item for another week. I asked them over and over, and they still refused. 
The order was for over $300 dollars. I now have $0 in my bank account. I'm a single mom with two kids aged 4 and 6. I don't get paid for another week.
For a retailer to refuse to cancel a mistaken order is downright unethical. Don't EVER use these guys.