maybe write them a letter rather than call, then they can answer when they have time. calling may be diverting their attention away from other things they have to do, their bosses may be giving them grief about time management or missed targets. Also once you write the questions down on paper or email they should have a duty to respond/answer them as they can not deny being asked the question as they do not know whether you have a copy of you letter or not!
your alters want you to keep trying for a reason, you ma not be able to see the reason just yet and may not realise it until after the event but there is definitely a reason for your being here, if there wasn't your last od would have worked. i tried a few times and in the end gave up trying because there was something keeping me here, i didn't know what until a few years later when i held the hand of an elderly neighbour as she passed away then i realised that was the reason my od attempts had failed. i have other reasons for being now and will always try and make sure i have a reason, but if not i trust there is one that i have just not discovered yet.