Sure can, our credit card processor works with AMEX cards all the time.
Absolutely. DCI is welcomed.
Yes. As long as the customer has agreed to the charge.
Sure can, using the card on file you can easily take pre-authorization holds such as for large equipment that can be released when the equipment is returned.
A chargeback is when a customer disputes the charge on their card. Rockon works closely with you to develop a response to the dispute, and prepares the response for you.