Yep, but the middlemen that is on the correct position and should do that is your card operator, not the merchant's payment processor.
You should be able to do it on your bank's site. And the fact that you can't is symptom of a really large problem.
You should be able to do it on your bank's site. And the fact that you can't is symptom of a really large problem.
You should be able to dispute any charge on your card. If you can't then you need to change banks.