Hacking your server and profiting from it is the cybercriminal's job. Their "job" is unregulated, risky, unstable, without any guarantees, highly competitive, in an environment where they need to be faster than their opponents (not only other criminals, but also sysadmins, antivirus vendors, etc.) and they need to exploit every opportunity they have before it's too late. You are a stranger to them, and you are an opportunity. Why should they help you? They need to make money from you, not lose time and money because of you. That's why you can't expect anything from cybercriminals, and engaging with them will be very dangerous. The only thing you can expect from cybercriminals is other exploit attempts, so engaging with them is only useful for investigation or research purposes (and only professionals and investigators should take these risks).
The only hackers you can expect to help you are ethical hackers. The problem is though: how do you distinguish an ethical hacker from a cybercriminal, or even from a gray-hat hacker? Sometimes it's hard to know what is running through a hacker's mind. Unless you have enough experience and you know what you are doing, if you need help with cybersecurity the safest option is to contact a cybersecurity professional.