This issue has been recurring for me since September at Sheraton's. I've stayed one each month and either a.) it never posted or b) twice it posted but didn't calculate the base points properly (would post maybe 27 base points, 15 elite points and 1000 bonus). I caught them and started examining every stay like a hawk. Hopefully, this hasn't been happening to me for years because I never really looked closely at the point calculations but if I hadn't the last few months I'd been shorted 20k-ish points.

Sad part is, on the last two emails to Marriott I try to be helpful and stated it's happened every stay of mine at Sheraton's and they don't even acknowledge they're going to look into the problem.