gp bug

I'd earn today free zp I had done I had 7000zp 7 M4A1 scope of Crates bought and then I had those Crates 38,000 gp and I had to eat when I came back I suddenly just 24000gp I certainly did not buy anything and watercourses there's nobody on my account because I had just got online when I went to eat I would be nice if you could help me with this
(Sorry for bad english I'm from Netherlands)

ewaldus1