We have been having a problem with double charging in some instances. We swipe the card and the PC Charge processing screen gets hung up waiting. Sometimes it cancels itself, sometimes it takes a while and we need to cancel it. We then reswipe and it goes through. What ends up happening is that sometimes the first swipe ends up getting charged to the customers account, but does not get registered as a sale on RMS (the second swipe does). Then, once the customer gets their bill and notices the double charge, I need to refund the card, and this gets relected in my sales on RMS.
Has anyone exprienced this? Any suggestions?