I over stayed by 4 days ..it was a fault of airline..
On my departure and a over stay I told immigration at airport ..they said no problem I paid the money ..I asked will I get a black stamp in pass port they said no nothing at all or on your record ..it was my first time over stay and not my fault ...so I see no problem as there won't be any thing in passport or records. ..just say the fine and fly out ..hope this helps