Did God let you down? Did you pray incorrectly? Maybe you just didn't have enough faith?
The answer from a believer is 'NO!' to all of the above. GOD didn't let you down, you didn't pray incorrectly and it has nothing to do with how much faith you have or don't have.
You can see part of this in the Lord's Prayer, something we do take seriously.
Right up there in the beginning, right after the salutation, it says "Thy will be done".
When you ask for something specific, the request always contains that proviso, "Thy will be done". If you don't get the answer you wanted, then it's because that was not GOD's will.
Why it wasn't GOD's will is something we will never know (at least in this life). But for a believer, even if we don't know or understand the reason, we know and understand that there was a reason.
God is not a Fairy Godmother, bringing us glass slippers and turning pumpkins into carriages. Life is not a fairy tale, it is real and immediate. And we are not all-knowing, we are not aware of all the factors in any event or incident, or capable of making decisions where our own best interests play no part.
We will likely question such incidents, bewail and bemoan them, perhaps even curse them, but if we are true to our faith, we will accept them.
How do you reconcile, if you claim God is accepting your praise, listening when you just want to talk, and even at times offering up guidance, but when you ask for something tangible and extremely important to you, God shrugs you off?
There's nothing to reconcile. GOD did not simply shrug us off.
Aslan is not a Tame Lion