First of all, prayer means -- A humble request done for something. Its NOT a question.
Second, will you still remain humble even if God didn't completed your prayer ?
Say for example: a beggar came to your door step and humbly request you to give him some money, but you denied his request. After that you find out -- beggar is looking with anger towards you. Instantly his humbleness change into anger for NOT completing that request.
Was this beggar a truly humble person ? NO, that because he was just doing drama of being humble, he was NOT humble in real.
Do people think God is fool who don't understand your drama's of humbleness ?
Being truly humble is a very difficult job.
I'd imagine if a person was really humble they wouldn't be asking God for anything in the first place. In the Lord's prayer somewhere it says "thy will be done".
You must be thinking you have some importance to have the Almighty to answer your request. Everything that's been given, you still be thinking you need more.