how many times have you self excluded yourself and how long was the gap between your requested self exclusion? also, did they say what the ban is for? was it because of the frequent self exclusion or something else?
anyway, yeah, their live support is bad, that being said, @holydarkness might be able to help you sicne he has contact on BC.game.
Umm... I don't think it'll be wise to help OP on this matter? It seems OP is a problematic gambler, and rage betting [well, he raged self-excluding, so...]. Me jumping in and try to convince my contact to lift the restriction is not only impossible due to the action itself will violate Responsible Gambling Act, but also have an adverse effect on OP's overall mental health.
OP, if you want to, though, I think I can help you get permanently self-excluded?