Fixing a Poor Hair Dye Experience?

Basically, my hair has been ombré for about a year now, I went to the hairdresser's a few weeks ago to have it done a bit lighter (rebleached), however I was unhappy with the results as they had put highlights up to my roots and I had not asked for that. I thought I'd leave it a few days and see how I felt. I still wasn't happy at all. I bought a natural brown box dye and dyed it all. This then turned my hair brown with khaki tones and a slightly ginger root. I have really long hair so this upset me so much. My hair had become a disaster. After a week or so, my hairdresser said she could re-dye my hair, putting the red tones back in my hair too so the khaki tint would go. This was successful however I've had to have a lot cut off my hair which has made me extremely upset and there's still ginger tones in the top of my hair. Therefore my questions are...

Will these ginger tones fade over time? How can I get them out quicker? Also what are some things I could use to make my hair grow faster? Im missing my long hair so so much!
I need help.