Hair Dye Tips ?

I've recently dyed my pink with 'splat hair dye'. After a week I actually hated so I tried fading it out as much as possible. (I bleached my hair before dying it) I then dyed it blue OVER TOP of the pink. BAD IDEA! I've faded out the blue completely but now my hair has a green tint and random spots of pink and purple on my roots. Any tips on getting it out? I've used a dye remover, ketchup, and vitamin c. All of which had faded it but not completely. Please helppp :' (