I'm sorry, but after reading the email chain in its entirety, I think you are being too sensitive.
Yes, the response to you was a bit abrupt. But at the end of the day, you want to gamble a bit, and they offer that to you. You state that you are unhappy with their withdrawal policy, and - by implication - they are telling you that they are unable to accommodate your wishes, that answer is final, and they wish you well in finding a casino that can accommodate you. Along with a smilie. I'm not really seeing any cause for complaint, certainly not so publicly like you've done here.
It could all just be a cultural misunderstanding. Some cultures are just very business-like, commercial, and rather cold. You just have to respect that if you want to deal with them - or else, as the rep told you, move on. I can respect that, and honestly have no problem with it.
As an example (not of Tropica), I don't particularly like not having any way to contact a casino except through email, but I do respect that lack of access, because ultimately, I just want to gamble a little, and get paid if I win, which I do. Don't worry - life will go on, and you'll find a casino that will be willing to pre-verify, and all will again be well in the world.