ibilling latest script full of bugs!!!!!

Someone please help me!!!
This script is too bad and buggy, they keep logging into my system claiming its fixed then theres something else. Now the script writes everything right to left like arabic. My staff are leaving work early because the system is crashed and wont work. They are useless and wont respond. Last time they responded was week ago now all silence !!!

ITS BUGGY, FAULTY!