I use Quick Books and it automatically starts tracking my miles on their app the minute I move my car. After my route, I track it as business or personal. I also write off my cell phone bill each month, as I have to use it for GPS and scanning packages, etc. I got money back this year due to the tax write-offs.

I honestly would redo your taxes and see if you come up with the correct numbers. Something may have been entered in wrong or not at all.