Well it most likely looks like you're trying to scam them, so they ban, simple logic.
Their is no big deal that you have a red + green dot instead or only red dot
they told you you could get your money back if you sent back the item, you don't want to, then go your way, your ordered an ACM dot, be happy that it works still, most of it are lemons ....
Anyway, i ordered like 5-6 times with acmgear, and i'm pretty happy with their services so far.