Here are some general rules that will help a student make the right choice. To protect yourself from unreliable service providers, follow these steps:

Writers' expertise. Pay particular attention to the writers’ team. They do the most important work, and they have to be professional, highly educated, creative, and experienced. Don’t underestimate their role.
Customer Support. Reliable customer support representatives should know how to handle any issue associated with customer experience. They should guide users through the process until both sides are satisfied. Reliable support teams are available around the clock, and they have no excuses not to support the client.
Prices. Don’t opt for essay services that offer unbelievably low prices. Such a deal might be tempting but does it look legit? If prices are too low, it’s certainly a red flag.