nando,
Asking the exact same question in different forms for many times will not give you a different answer. Some corrections here:
1. Hacker is one thing - scammer is another one. You were dealing with a scammer, and not with a hacker.
2. Facebook is a social platform - most of the usual business people are using LinkedIn to keep contact with business related people. And, of course, emails / phone numbers.
3. Last:
if I reactivate old account and change details like you said, is there a chance scammer will come back?
Yes, there is more than a chance. Because:
- if the scammer befriended one of your friends
- if the scammer tagged one of your pictures
- if the scammer joined a FB group you are in
- if he follows your profile or one of your friends profiles
+ few other similar "if"'s...
=> he will be able to see your profile again after you reactivate it.
You have this answer in various places on this forum. Maybe you missed that, so I made a short list for you above.
It is your decision to keep your old profile or follow the advice you asked for and create a new one. And of course, it is your problem to deal with the potential consequences while deciding to ignore what people told you here already.
Hope the answer is clear enough now for you and we will be not going back to the same question asked in a different form.