i just setup mangodb but i have already ram using why?

N/A

Hello, this is a known display bug and the team is aware, for a more accurate representation of ram usage for the service visit the metrics tab in the service, but rest assured you won't be charged for 2.4gb of ram, its purely a display bug

oh thanks

lol I'm deleting MongoDB again and again

No need for that, it's just a display bug

No need to worry