Xolo Secure blocks Factory Reset option while the phone is working. If you want to perform a hard reset, simply turn off the phone then remove the battery and keep it out for a few minutes. Put the battery back and then press Volume Up + Power button until the Android logo appears. Once you are in the recovery menu, use volume buttons to select the Wipe Data/Factory reset option and Power button to confirm it. Wait for process to finish then reboot the phone and you will have access.
Note: After this operation, custom settings and apps will be wiped from phone, however, your content (pictures, music, files, videos, etc.) will be stored.