I am Soft Coloration 338 Hellbraun

Natural blonde no. 310 out of the range - why? Hello, why are there (still several shades of brown and) no more natural blonde no. 310? Can you please include No. 310 in the range again?

Hello, I (15) applied this tint myself a few days ago. It worked quite well and was easy to apply. Unfortunately, I don't like the result at all and I want my blonde hair back! I've washed my hair a few times since I applied it, but there's still no difference. I'm worried whether the tint will really come out well and whether I'll really get my natural hair color back afterwards. A friend of mine who tinted her hair 2 months ago can hardly see any difference even now! I would be very grateful for an answer. Thank you very much.