I last played a game that unlocked achievements on sunday 11th october 2015, after playing that game I was left with a Gamerscore of 291,490gs. I have turned on my console today (Wednesday 14th October) and would you believe it, my Gamerscore has somehow managed to go down, and I now left with a Gamerscore of 291,465gs, meaning I have 25gs less than when I started!!! I take screenshots of my gamerscore on an almost daily basis, due to previous experience with issues happening, and trying to explain to the awful people on support chat can be ridiculously difficult at time, so I do have a screenshot of my score with the 291,490gs and also 291.465gs.
I have noticed that on this very page it also has no display of my Gamerscore at all, instead it shows -- instead, could this be related to the decrease at all?? I appreciate you guys probably get a ton of issues raised on a daily basis, but this really is getting beyond a joke, i don't invest my time and money into all these games just to constantly have to battle with various faults that detract from this. As it stands I am already demotivated from playing games because of the constant issues, and if these issues are not likely to be addressed then it's likely there will be one less Xbox gamer using your services.
All of the achievements I unlocked in the last game I played, Alien Isolation, are showing and are correct, so I don't believe that game is the one causing the issue, I have re-downloaded my profile, hard reset my console, and all the other things that are usually mentioned on here too...just as a heads-up.