Friend of mine sold his BA account with 321Kpoints. The buyer booked many short way tickets. There are only 850 points left after all bookings. Two months later, the 850 points was dedut from the account. My friend was curious what 850 points can do, that is when he found out that the account was reviewed. BA did not close the account, just removed all the remaining points. Later the buyer told my friend that 3 tickets was cancelled.