Error establishing a database connection

This site is now getting the above error mesage continuously that takes this site down.  It was down Sunday 3/10/19 and again today 3/12/19.  I’m having to call at least once a week if not twice to have this corrected and this has been happening for two months if not three now.  I post TRUTHS that have been kept secret and TPTB do not want it exposure. I ask please if you come to this site and it is down with this error please come back because I usually check it every day if I’m not posting and as soon as I’m aware I call and it is back up within ten minutes. Thank you for your patience!