Apple insisting my ID info is not correct, but it is, what to do? My Apple ID is an old email. I have just tried to update some apps but it's telling me my password I entered is wrong (it isn't).

Then I tried to reset my password. As my Apple ID is a no longer a working email, I chose the option to answer a security question. I put the answer in and it tells me my information is incorrect.

I know my Apple ID is an old email, but I also know that my password is NOT incorrect although they say it is.

What should I do? I know the information I'm giving is correct but Apple isn't accepting anything except my Apple ID (now a disfunctional email address) and my birthdate?
I second that you should contact Apple support about this. There could be a few reasons why this is happening, but it's likely because the actual account name has been changed since you set up the account.

http://support.apple.com/kb/HE34

If you follow the steps in the article above it will tell you if there still is an Apple ID named after your old email address.