Now what you can do is move on. Udhar workshop mayn gari check ker kay nikalni thee, once you are out they would hardly admit their fault. But still if you want to upload your anger on them phone and email are your best friend. Acha ha catharsis ho jai ga.
On the other hand if you let it go thinking kay mujh say bhee yeah kharab hosakta tha. Dil kay sakoon kay liay.