You are aware...
That many of these dimensions are either as small as the very theoretical
strings - which are 17 orders of magnitude smaller than what we can
currently detect - or so vast as to make our Universe seem like a string
in comparison.
Most of these dimensions are purely theoretical. We do not even know
if they exist yet, if at all. So how do we communicate with hypothetical
beings in hypothetical dimensions?
Study up on some of these dimensions and ask yourself afterwards if
any living thing, let alone something intelligent, could exist in them.
It's easy to believe in angels and demons if you don't think about them too much.