How academic writing companies facilitates students?

As a Ph.D. student, I was very depressed and worried about my research work and assignment, because as an international student and part-time worker it becomes very difficult to deal with everything and it makes me depressed that I will not be able to finish my Ph.D. on time. After doing some searches online regarding assignment help, I came to know that there are many academic companies who are virtually helping Ph.D. students to get their dissertations done, the first step is to inform them about the requirements of my assignment and then I will pay someone to do my assignment according to my needs and requirements.