Welp, 20 days after getting assured my miles would be back in my account that day and they're still not there. After hours on hold multiple times and also via chat gotten assurances it was escalated and would happen within 24 hours, but the miles still aren't there. This has been by far the most ridiculous airline customer service experience I've ever had, particularly because every other airline I've ever used does all the miles redeposit automatically. Nothing to do but keep trying until someone finally actually pushes it through.