They will communicate verbally in rare and extremely valuable cases with Spiritual Satanists. It is the case of needing to be at a certain level in advancement and as a soul and this is also on Their Divine reasoning. However, your Guardian will guide you and direct you, communicate with you in ways that you will understand 100%. Unseen, indirect, direct and by all ways, but not necessarily, although not fully exempt, by verbal way.
I know there is an expectation on this, and to not crush these expectations, but to relate the reality of the matters for your proper growth here. I am not saying to block this eventuality or happening from your mind, but to avoid any delusional situation, since any real interaction from them will be outside of the sphere of doubt either way by experience and in time.