I would be taking all this effort on board if I were you. You have to ask yourself, if a company provides such pathetic customers service for your type of inquiry, how bad would they be if you had issues with products that needed to be sorted?
Although I'm sure you're feeling frustrated with their lack of response, this type of research is invaluable in my opinion. It can really save you a lot of heartache down the track when a business shows their arrogance so clearly up front!