Digital River wrongly charged Florida Sales Tax on an internet purchase I made for some Pinnacle software and a written manual. The amount was small, something less than six dollars. I asked them to confirm that they had credited my Visa card with the amount of the sales tax, but could not get any one to do so. They just keep refering you back to their website and the same email form I filled out in the first place. They have the worst customer service I have ever seen. Period. read full review »