Hello, Ms. Gunita, Thank you very much for sharing your opinion. We are truly sorry that the final result did not meet your expectations. However, we would like to kindly mention that during your visit, our stylist informed you about the possibility of toning the problematic strand to neutralize the color difference and offered a free correction. Your hair was challenging due to previous treatments and coloring history, which made achieving the desired result more difficult. We never experiment on our clients' hair – every action is carefully considered and preceded by a thorough consultation. Unfortunately, not everything can always be achieved immediately, but your satisfaction is very important to us. We kindly invite you to contact us – we will gladly perform a free correction to ensure you are fully satisfied with the result. Once again, thank you for your feedback, and we wish you a lovely evening. Infinium Haar Design Team