Zapvi — Wrong model case cover sent

I recently ordered from Zapvi for my one+ 9R handset. However, i received cover for one+ 8T. When raised issue they asked me for vedio and photo as conclusive evidence, which i shared also. But they did not find any issue in that . Which is pathetic. I'm the photo which I shared with them the ordered item and received item difference was clearly visible, but they did not find any issue in that. Disappointing service.