Sniper Elite 3 Achievement issues

I've had many issues with my sniper elite 3 game. I have completed 6 achievements and I have not received my gamer points. I have sent at least 10 emails to 505 support regarding all my issues and they aren't helpful at all. I have even sent them pics of
the score where it shows I have completed them and a pic of the achievement still locked. I've contacted xbox live support and they said I needed to post it here. I don't know what I'm supposed to do but I'm getting very irritated. I just want the gamer
points I should have unlocked. Does anyone know what I should do?

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Sniper Elite 3 - Saving Churchill

This DLC is amazing I now have all achievements unlocked for Sniper Elite 3

 

Sniper Elite 3 Trailer for Xbox One

This is misinformation dude. This is not Sniper Elite 3. This is Sniper Elite: Nazi Zombie Army. You can't claim this to be the Sniper Elite 3. I'd laugh if somebody who reads this believe what you said, went to Walmart and asked for this game and then went home, popped it in and found out there are no zombies. Just regular Nazis. So anybody reading this, THIS IS NOT SNIPER ELITE 3.