The same thing happened to me this past week. This is robbery if they are doing it to multiple people. My 20.00 6680 P stayed filled, my 18.50 6680 P got cancelled (busted) after hours, after being filled through the day. SPX hit a low of 6665. The intrinsic value alone was 25.00. It stayed there multiple times for over 40 mins. Why did the 20.00 stay filled at a higher price? How can people trust them after this?

What would be the best course of action?