What should I do now?

So I had a horrible bleach/dye job done by a professional. My hair was bleached two times to reach a really pale yellow that was even all over a week in between each bleaching. The second time I came in, I asked for a grey hair with a slight blue tint. I looked at Pravana hair dye swatches and agreed on Silver and Blissful Blue. Unfortunately, the blue overpowered the silver and I got deep blue hair....not what I was going for at all.

I have done 4 fading treatments which are 1 treatment with vitamin C, clarifying shampoo, and dishwashing liquid; 1 conditioning vitamin C treatment; and 2 treatments with vitamin C, clarifying shampoo, dishwashing liquid, baking soda, 20 vol peroxide, and oils. I'm not left with a really faded Pravana Blissful Blue with a slight green tinge to it.

What should I do now? Bleach cap or bleach powder + shampoo and oils?

I added some pictures of my hair.

Pictures from top to bottom: 1st two are right after I got my hair done, 3rd picture is after 2 fading treatments, and last two pictures are my hair currently.