I used the wrong contract address for a cryptocurrencies purchase, and they were able to resolve my mistake in a timely manner. As I recently got the new MEW wallet app, which has a public address I should have used instead. When I received notice that my order failed, I filled out a support ticket as directed. They were able to research and find my missing purchase, and have it resent to my public address for my MEW wallet. In addition, when I realized my mistake, I was able to make two other large purchases with no problems. Both additional payments were sent to my MEW wallet, with no unexpected delays.