first demo tick 29200 - You attempt to wall someone who was never actually visible. That alone wasn't what made it suspicious though. The suspicious part is that the shooting begins immediately after the player is about to be visible (anti-wallhack begins to send their data to your client. Only at this point would a waller see the player). This is suggestive of a triggerbot (since your crosshair was over them) or plain wallhack.
second demo tick 17000 - This one is pretty bizarre. Your crosshair is on a player at waist level while they are behind a smoke. The instant you shoot your crosshair flicks to their head. There appears to be minor vector adjustments which continue until the player is confirmed dead (suggestive of an aimbot).
Considering the SourceTV demos as well, I don't see this ban being lifted. You're wasting your time.