I can see Estoc at Shaxx but it says I have to complete my placements to obtain the reward. I can't exactly do my placements again if I'm sitting in Silver II. Seems the fix is also bugged, hopefully you guys can fix it quickly.
Edit: Finished the quest from Shaxx to do a single comp match (Dividing the Ladder?) and it dropped Rose and Estoc. In case anyone else has this issue
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In this case I would just try playing 3 matches and see if you can grab it afterwards. Might be a waste of time, but you also might be able to trick the game.