better than I expected from Netflix

Netflix's business people may have their heads in anatomically-challenging places, but their customer support continues to be excellent. We recently ordered the first disc of a three-disc set (The 10th Kingdom). The sleeve proclaimed a running time of 4:25 and the DVD had a label on it. At around the three-hour mark play stopped with a directive to switch to side B.

This does not fit neatly into any of the categories of problem supported by their web site, so I called. I explained the problem to a friendly, sympathetic rep and said that since this is the first of a multi-disc set I have no way of knowing if I've seen everything that's supposed to be there -- yeah, it ended in the middle of the story, but you expect that. So I don't know if they have a problem with their discs or with the time labeling.

"Amanda" said she would send a replacement for that DVD (just in case the problem is a label on a two-sided disc, though that would be a manufacturer error) and also the next disc in the series so I can tell whether there seems to be anything missing in the story. I have the one-DVD-at-a-time plan, so I expected to have to do this in stages.

I've only had a few problems over the course of my Netflix membership, but they have all been handled well. I'm glad to see that's still true after their semi-restructuring.

Tangentially, how can I get GMail to stop treating my Netflix mail as spam? I would have thought that adding the relevant address to my contacts list (which I would otherwise never do) would suffice, but no. Nor did manually reclassifying a couple dozen messages as "not spam" make any difference; where's that "filter bubble" that delivers personalized results when you need it?

Followup: The second disc picks up right where the first left off. The error is not in the discs but in the labelled duration. I'm not sure how to get Netflix to fix that to avoid confusing future viewers.