You're saying things here that aren't in the Bible. For example:
"For the supernatural to intervene on your behalf, the place of being consistent in your communication with God is necessary. It is only in the place of your consistency in prayers that heaven’s door opens up for you and settles all your troubles either through divine intervention or divine direction on what to do to overcome your trouble(s)."
I've had prayers that were answered "yes" as I was praying them. I've had others that I prayed about for a long time that weren't answered as "yes".
NOTHING qualifies us for help in overcoming ALL of our troubles.
I prayed over and over again for the health of my first unborn child. He still died.
I prayed over and over again for the health of my second unborn child. She still died.
I prayed over and over again for the health of my wife's transplanted kidney. It still failed.
I prayed over and over again for the health of my wife. A lot of other people prayed for her too. She still died of complications due to kidney disease when she was only 30 years old.
James is very clear about why we seem to have a lot of problems.
(James 1:2-4 NIV) Consider it pure joy, my brothers, whenever you face trials of many kinds, {3} because you know that the testing of your faith develops perseverance. {4} Perseverance must finish its work so that you may be mature and complete, not lacking anything.
I truly accept your point of view, but this post is clearly based on my own personal relationship with God. Things might not go as planed, yes, but does that make God a lair, the answer is no. So, we can be consistent and persistence in our communication to God for His divine intervention, but He chooses whether to answer or not - that's why He is called God. Am really sorry for your losses. God knows best!