Remember that you have enlisted their services. In other words, they are working for you. Their work is an investment in which you have put money, and you deserve good returns. They should give you a free title page, formatting, outline, and bibliography.
This includes the general mistakes that you make especially if English is my second language. Your writer also needs to be aware of the books and materials you have used in your class. He can use them as referrals when handling your assignment.
You have to be certain of the guarantees offered by the custom writing company you have selected. Do they have an on-time delivery guarantee? Do they use up-to-date sources? Do they guarantee the confidentiality or that they will not resell your paper? You need to ensure that the company whose services you are hiring guarantee all these aspects.
Some have opined that students go for these services because they are lazy. This is partly true, but the biggest percentage that goes for these services are students who are trying to beat serious deadlines or have a deficit in their writing skills.
If you seek the services of a custom writing company, you get: Thesis help and Research help; Proofreading and editing help; Help with writing a particular portion of your paper; Write the entire paper; Proper formatting, citations, and references.