weird, the symptoms you described sound exactly like the cycle it goes through if you plug in a charger which for some reason is failing to negotiate the charging rate.
But obviously the real nokia charger should be fine.
that said... if you are using a data cable to a windows box, I have heard that windows will basically refuse to negotiate usb charging until it's figured out the device drivers. So it's possible that something on the computer is confused and not responding to the charging negotiation.
I would try a real nokia plug-in charger, or perhaps a different computer?
if it's linux you could check out dmesg to see if there is anything during the initial plugging in that would indicate a failure.

Sorry you're having so much grief.