Streptomicin,
there is a cure, although it is slow and onerous: wait them out, get the win, and then block them from ever playing you or seeing you again.
not only will that person lose the game, but they will also lose out on being able to browse in your extensive and quite excellent posts series of games.
regards,

Whats the point of creating 15 min live game, losing everything in 3.5 min, and then letting time go away and lose game.
Why not just resign? If you are going to let time expire, why not save us 10-15 min and hit resign button right away.
This is just bad behavior of live chess players that I encounter more and more often this days.
And I am not talking about disconnected players. They are here all the time.