Hi jeldoc,
Thanks for posting on the Community Forums, welcome!
I'm sorry to hear you've not received a loss of service credit as promised, after your outage over Christmas. Once the outage has cleared, we will run a check to see if a credit is due and how much - it'll then be applied to your next bill, so it's possible that you've just not had the bill yet with the credit on.
I'll be more than happy to check for you though. I've popped you over a private message so I can take some details and we can go from there 🙂
Cheers
Beth