James was very quick like a con man is.
Quick responses actually aren't necessarily a red flag: I typically respond to inquiries and to existing clients within minutes of receiving their emails unless I'm out or sleeping because I'm usually in front of a screen 16+ hours/day.
He said that a writer with my job background would write the dissertation.
This is always a red flag, whether it's on an essay company website or from someone here claiming to "know" how some essay company does business (which also means that person is really just a shill for that company pretending not to be). As I've explained many times, essay companies don't "assign" projects to writers and most of them don't put any limitation on what projects can be viewed (and taken) by any writer with access to their assignment boards. Company writers with zero experience in a particular area often take projects that they really have no business taking. Companies usually play no role in that process and don't even keep track of what projects get taken by what writers. Unless there's a complaint about a project after delivery, companies have no idea which writers are taking which projects: they just list all of their available projects on assignment boards and they pay writers for all of the assignments they've uploaded to the system every month.
He was very polite too in the beginning until I received the first chapter of the work. When I continously kept commenting that iys not what I'd asked for he eventually started giving me attitude, something even writing in capital letters to reply my texts.
Excessive politeness during the inquiry stage is often a red flag. Busy writers who actually have to provide good work on every project just don't have the time (and/or patience) to entertain lengthy email exchanges. Typically, we ask for all of the necessary information needed to price a project and we address specific questions; but we usually don't have time to go through endless exchanges or to jump through hoops to get your new business. Scammers have all the time in the world to gain your confidence (hence the term "conman"), simply because that's their entire job. By contrast, legit writers actually have to write every project we book; so we're not going to have as much time to sell you on our services to get your business.
For example, if you continue asking me questions that are already fully addressed in my FAQs after the first time I ask you to read my FAQs before asking more questions, and/or if you make me email to ask you the same questions more than once, that's where you'll notice my annoyance in the tone of my emails, right there. Conversely, when you're dealing with a scammer, there's almost no limit to how long they'll keep up the impeccable customer-service tone or to how friendly and excessively polite they'll continue to be, until they have your money in their hands. That will all flip on a dime the first time you ask about canceling your order (even minutes after paying for it) and, especially, once you have any complaint about the product after it's delivered. The Dr. Jekyll/Mr. Hyde routine is extremely common and that transition happens the instant they have their hands on your money.