How do I contact Facebook customer service directly through e-mail or phone?

I have been running my Facebook blog for a year and a half now. And recently my account was hacked, which made me very upset because I paid a lot of attention to this page. I worked hard on the content and didn't want to lose it, so I contacted Facebook customer service to regain access to my page. They did not quickly help to solve my problem and also did it reliably so that similar situations would not happen again. Therefore, if you are faced with the same problem, I advise you to contact them.