Nokia :: 5800 - Updated Maps Application / Incorrect Info

I am a foreigner in Thailand. I just want to ask that why all these road and rivers on these maps used to be right when it's been charged while been wrong when it's free? I updated my 5800 few days ago, and then I found out that the map on my phone said I can't get to the main road because there's nothing connected between them? If u check the map, at the address: bangkok HuaMak Ramkhamhaeng 24 Yaek 34, compare with google maps on same location, you will see that according to the maps on the phone there's no way out. Where's al these river's been gone? Yesterday, I went to the center of Bangkok to exchange some money, when I came back by doing boat, the river on my location is gone. Please, I want the old map, the maps that been charged.