Old post but as always there are two sidesto every story and the truth is somewhere in the middle. The issue was an avs address mismatch via authorize.net and the fact he submitted the transaction multiple times. I remember it out of our 6000+ transactions because everything i said he said i was wrong and he yelled at me. At some point i probably yelled back since nothing i said got through. Probably not the right thing to do but it was out of frustration. I operate under the principle that the customer is always right. However, i have also learned that rarely there is customer that cannot be made happy.

All i can say, there's only 2 unhappy posts like this, which is a fraction of a tenth of a percent of all sales.