Hi. Hi' If you have access to a computer, contact us from here http://roms.satechhelp.co.za/contactus/ and we should be able to help with the reset for R50 donation. Otherwise, take it to your nearest phone repairs shop and they should be able to reset that for you.
Go to settings, under "Account" touch Add account and choose "Google" from the pop-up manu, on the next screen' if you have an existing account choose "Existing" to log in to your current Google or "New" to create a new Google account.