This needs to be fixed about Azir

So, I was playing as the one and only Azir in a game and for some unknown reason, a thresh was going mid. Yeah, you think its easy, I did too, pretty hard to play against a thresh who knows what he is doing. Anyways moving on. So i was playing Azir and i ulted, after my ulty i was stabbing multiple times with my spears, more times than Julius Caesar when he got stabbed about 23 times. So im behind my wall of dudes, and somehow this thresh KILLS me, when my wall is blocking him and he has no contact of getting me. Ok, i understand an ulty that can be cross map or something such as jinx, ashe, or ezreal killing me, but thresh's simple grab kills me, over Azir's ult, now that is pretty sad. Something with a 100 second cooldown cant stop a dumb piece of demonic metal that has a 20 sec cooldown, its kinda sad how this ult cant stop a simple ability yet it can stop a flash. If anyone is reading this please give me your opinions and try your best to contact RIOT and tell them this, and if you know any other champs that can use abilities over Azir's wall, comment it down.