Hello and welcome to justanswer, My name is ***** ***** i will be assisting you today,
I'm sorry about the issue, If you don't remember the code, then you have to reset your iPhone to factory settings from iTunes on your computer. this will erase all data on the iPhone :
First download and install latest iTunes on your computer from here : http://www.apple.com/itunes/download/
If you have any trouble following the steps above, please let me know and I will gladly continue to help.
Has everything worked out please?
are you there ?