CX award flight on BA cancelled

Pointify is tracking this dispatch for the points-and-miles community.

Had a BA flight outbound from LHR booked on CX points for early next year cancelled. I didn't receive a notification, just saw when I logged into CX. I called CX multiple times and they said only available reschedule they can book me on is 5 days later. They said I could try waiting to see if more availability opens up on their end from BA. There are two BA flights available via cash on the day I need to travel. Is there anything I can do to escalate to get