Hi man, It happened to me 2 weeks ago. Try this. I made it in vb.net
Public Shared Function WGS1984toLonLat(ByVal x As Double, ByVal y As Double) As Double()
Dim ret(1) As Double
ret(0) = (x / 20037508.34) * 180
ret(0) = 180 / Math.PI * (2 * Math.Atan(Math.Exp(ret(0) * Math.PI / 180)) - Math.PI / 2)
ret(1) = (y / 20037508.34) * 180
Return ret
End Function