Assuming this crewing issue isn't resolved anytime soon, are more cancellations each day likely to become the norm in the coming days/weeks?? If so will indeed be costing them mega £££££££
If it's a long term, chronic shortage of staff and not some short term blip due to sickness or hours, they'll need to start looking at adjusting their forward schedule, surely? There again, if it is a structural shortage of crews, why didn't they see this coming.
Surely they didn't just wake up one morning and find they had no crews?