Smartphone Questions? Ask A Smartphone Technician for Answers
Sorry to hear about your issue :(
If you don't remember the passcode, unfortunately , the only way out is to restore the phone to factory settings.
Have you ever backed up your iphone to icloud or to itunes in the computer? If so, you would be able to get back all the contents.
Try some passcodes and after a few failed tries, your iphone will be disabled.
Now, open itunes in the computer and connect the iphone to the computer. Now, on the iphone, press and hold the power button and the home button together for 30 sec. Your computer should now give a message that it has detected an iphone in recovery mode and needs to be restored. Restore the phone now.
Let me know if you find any difficulty.