Sign up for Square. It's super easy. It will take you 10 min. Square. com. And you are all set. Process cards right away as soon as you get reservation. There is no other way. Put your cancelation policy to non refundable. If a card is declined notify a guest about it immediately, mark card as invalid in their option list. And if guest does not communicate with you about credit card issue, next day at 6 pm call booking.com and cancell him.
Carmen, I tried all different ways. There is no other option for us to do it, since we are such a small property. I wish someone told me these before I went through all kind of frustration with this system