Delta's problems following the CrowdStrike outage that temporarily bricked millions of Windows PCs around the world just became more of a headache.

Some customers who had their Delta flights canceled due to the outage have filed a class-action lawsuit against the company, per CNN. The lawsuit, filed by Sauder Schelkopf and Webb, Klase & Lemond, accused Delta of failing to properly compensate customers for their troubles, either by refusing refunds outright or making customers sign a waiver to only get a partial refund.

While many airlines around the world were impacted by the CrowdStrike outage, Delta had a particularly difficult time recovering from it. By the time the next business week started, and most other airlines had sorted the problems out, Delta was still canceling flights. As CNN noted, many customers had to pay out of pocket for expensive flights home on other airlines, not to mention accommodations for those stranded overnight. According to customers, Delta didn't provide vouchers for that either.

Microsoft and Delta have been going back and forth, publicly blaming each other as the primary culprit for what happened. While Microsoft hasn’t faced a lawsuit as for this writing, Delta now has — so put that on the scoreboard.