incrediBILL - 9:49 pm on Jun 21, 2011 (gmt 0)
I recently noticed this one guy who tried to place the same order 8 times in a row, and each time with a different credit card number. The order kept getting declined because each order he tried to submit came up with "no match on street or zip code".
I've seen some nasty order attacks and you pay a fee for each attempt. Customers get a cut-off at about 10-15 attempts so they don't bankrupt me with transaction fees and 5 card # changes gets the axe as well.
I also pre-screen transactions and test the IP against the address and if the country doesn't match I dump it before calling the gateway. The GEO-IP services work OK for most IPs but obviously fails miserably on wireless broadband transactions.
Just a couple of tricks to play to save some fees
I don't provide the decline reason either, I offer them Paypal ;)