Yep - did the same thing last July, but dealt directly with a supervisor, who acted as my advocate. When stuff didn't post the following month, I was livid. Turns out some items were credited at 1.2x points, which meant I didn't hit the $ limit, even a couple days late. After charging 2 more Items, and a couple more calls to the sup., points finally posted 2 months later!
This is a battle you should win.