But people do feel like they can go to home depot and ask the sales guy, who might or might not have any experience with the door you would buy, would tell them what he feels you need to do to hang the door so it is not crooked.
Lets go to the store and ask the sales guy how to hang the door. He should be fine with it, he wants to sell the door. Long ago when you would go to the hardware store it was fine to do this since most of the time you would buy the door from the sales guy and he had some markup already in it to cover the sales guy who has knowledge. But with the internet the customer might ask the sales guy but buy somewhere else at a cheaper price. People have been trained to use the internet to get free info and cheaper purchases. It is amazing to see what people feel they should get for the purchases they make. I believe I saw an article about Cisco getting rid of Linksys because of the way the consumer expected things to be done. The low cost/high demand/High expectations on what should be included. Naturally consumers (especially small business) take this feeling to work with them.
In your case he is doing the same thing but has no door to buy from you. Unless you get his ROR and subscription renewed through you before you answer or sell him the EDI/what ever.