Security against fraud

hello everyone, and greetings, this is my first post, this is my experience and I need someone to confirm if there is something in it, I entered my dell account, and I decided to chat with a sales representative, and this person did the I arranged for a discount on the laptop I wanted, but it sent me some popups asking for my dell financial service account information, my email, my phone and other sensitive information, in the end I offered it, and well including my credit card information credit since I made a split payment, when I checked the status of my order it said it was on hold, and I started chatting with another person from sales, and that person confirmed that I needed to call the verification department and gave me this number 8443709731, call and the person tells me that the order is indeed on hold and that he needs to verify my account, that he was going to receive a code on the phone and that he had to give it to him for verification, the code that I received was literally an authorization for someone log into my dell financial service account, and the message literally said YOUR DFS SECURITY CODE IS 0000 IF U DIDNT PLACE AN APPLICATION/ORDER WITH DELL PLEASE CALL 1855-467-8291, and that number is marked as spam on my phone, now my The next question is, why all this process and why I have this problem, and the person tells me that it is to avoid identity fraud, how does everything work, have I been a victim of fraud? is my information compromised? because dell has so many strange ways of proceeding with the information of the clients, greetings and I hope someone can help me explaining this situation, and verifying if those numbers are real numbers of the company