Account help pl0xxx!!

So I bought an account and ive been playing on it for a couple of weeks and set iDung on it and had it running but for some reason it entered the pw in wrong too many times and now my account is locked and i tried putting in my recoveries and my email is even registered to it! but they guy who sold me it only gave me the following information
Last payment: RS game card 30 day
Created on: Bigpond, Mexico
ISP: Comcast
Now i keep getting denied on my appeals? help please!