Trying to remove Manic Panic Hot Hot Pink

Hi guys!
So I have Manic panics hot hot pink in my hair for about two months now and I decided to fade it out and go back blonde. Prior to the pink I had bleached blonde that had been toned to grey (which lasted one wash) and had been then toned to ash blonde. Then I went all out and used Alfaparfs crazy colours and put in magenta. When this was fading I went for manic panic. But now I want to just go back blonde or have a very light pastel tone.

I used clarifying shampoo two or three times, head and shoulders a few times and when I wasn't getting much fade, i used head and shoulders, vit c mix once, and a head and shoulders, vit c and bicarb mix once- with a week in between. My ends were after fading to a lovely pastel pink but the top just wouldn't budge. So I did a strand test today with extra strength Colour b4, just putting it on the stubborn pink and it seemed to lift the pink to an icky ginger, but I figured I could fix that so I whacked the stuff on all over.

Well now the pink is mostly still there, my roots are that peachy ginger and some of my ends are gone bluey purple?! It's a disaster. It looks like a Hot Hot Mess 😛

How do I fix it?? I had two or three superb results with Colour b4 in the past but it seems it either works miracles for me or screws it up worse... Would blonde take over this do you reckon?! Or what? I can't bleach it, I'm trying to grow it and stay as far away from bleach as I can, in fact I plan on leaving it be once it's blonde and just letting it come back to me. We've had our differences over the years, me and my hair...