Never ever gotten the money i sold my game account for even after the 14 days they have told me. No protection from scam after 14 days so the original owner can just change the account details and you will be locked out forever with no way of recovering it. Contacting support will just have your ticket closed with no replies or help at all. Won't recommend buying an account from them unless you're buying items.
We are sorry to learn about the issue you encountered. To further clarify on this matter, do you mean to say that you sold an account, and as the original owner you change the account details to lock out the buyer, hence you did not receive the money for your sales?