I'm sorry your not sleeping. I can relate I have chronic Insomnia.

I am a bit concerned with just how much Ambien and Xanax you took in a very short amount of time ...

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Saturday, I briefly awoke for the morning shows, remember seeing the clock at 7PM and slept the entire day, no eating, not going to the bathroom, just zonked. Sunday I slept in till 12pm. Sunday night, I took an ambien at 10, another at 12:30, and three Xanax at 3AM, I was completely awake all night.
Monday, I took an ambien at 10, another at 12 something, and think I may have gotten three hours sleep.
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Taking both Ambien and Xanax in those amounts is really dangerous I wound up IP after I over served myself Xanax.. I didn't realize how many I had taken.. it does muddle your mind... Is there someone that can hold your meds and just give you what you need for a day or 2 so you keep taking more and more in a desperate attempt to go to sleep?

I hope your pdoc can help you find a solution that will work and isn't dangerous.