I can understand your frustration, but I hate when so called "potential" customers say things like, "Guess they lost me as a customer and the 8 batteries I MIGHT have bought." Look, either you want the batteries, or you don't. If a load test was what you needed to buy them, then I feel sorry for every purchase you need to make. Let me ask this, this company you're going to go with because you weren't catered to, do they have 500 amp load tests on similar batteries? No? Going to threaten with no sales if they don't do a load test? Sell one, and get what you need to test if the numbers matter that much. I don't mean any disrespect but god damn.
/rant