I have forgotten my username (in my defence I only used it the once)

Nokia will email me a new password but cannot send my username.

Can I retrieve it from the phone somehow?

I have tried removing the app and downloading it again but this does not prompt for a new username, instead it just restored the previous routes etc. Seems that removing the app is not the same as deleting it?

I have email nokia twice but have had no reply.

Any suggestions (apart from remembering my username next time)?