As I said, you cannot exchange credits for unbinding tools. I have 40000 credits myself. They are useless.
You need to realize that those guys on support are from China and their English is not very good. What the first guy meant to say is you can get the unbinding tools on both of your chars by spending item mall points. For exact prices you can see hot sale notices.
He said credits because in his mind credits are the same thing as points. He doesn't even realize credits are something completely different than points. Mostly because of the language barrier, but also because hes probably working on support for all of IGG games, he didn't learn much about VCO, he doesn't realize we have separate thing called credits which are not same as points.
You cannot unbind generals nor their items. They wont do that for you. That one GM who said it can be done is probably new and had no idea what you were asking him about. He probably thought you were asking about unbinding apparatus items or beliefs, which why the second answer you got is all about which tool you need, depending on the price of the item.
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