My iphone was replaced as it was defective, during the switch, the Apple Store claimed they could not save my itunes or photos from the old iphone.
Shouldnt there be a back-up in my itunes library? and if so, how do I access that to download in my new iphone?
Check this Apple article out -> iOS: How to back up
If you've created a backup, you can right click your iPhone in iTunes and choose Restore from Backup.
The backup would not contain your itunes content or pics synced from computer to iphone.
Retrieving data ...