I received tips this evening from users who purchased
Redfall's Bite Back Edition that they were receiving automatic refunds. The Bite Back Edition cost $26.99, and Microsoft appears to be refunding the full amount to users on both Xbox and Steam.
Refunds seem to be rolling out in waves, with some having received one already, while others are currently in waiting. You should check your Junk Mail attached to your Steam or Xbox account in case it has fallen in there. One user also informed me that they were able to work with
Bethesda Customer Support to receive a refund for the physical version of the Redfall Bite Back Edition as well after submitting a ticket. Although if you go down this route, be patient with waiting times, as there may be a fair few other people trying to grab refunds via this method as well.