Green Trends — Worst hair straightening root touch up done

Hi I did hair straightening root touch up on 27th June 2021 at green trends iyyapanthangal, Chennai. The person who did the straightening was very harsh with my hair while removing tangles and she has completed the whole process within 1hour whereas it took a more than half a day at the place where I did root touch up previously and now my hair back to curls. The straightening dint work at all, it is a complete waste of cost and now I'm getting a lot of hairfall.