Locked out of Galaxy S Duos - Failed lock pattern

I have Samsung Galaxy S Duos S7562 which is now locked with too many failed pattern attempts. I don't remember the pin for it. I've changed my password for Google account from laptop and I wanted to login from the locked out phone but it says *wrong password/username*. But I can log in on laptop. I'm using mobile data connection to sign in to google account. Please someone help me as I don't want to hard reset, I have important data on it.