Nothing here yet… 4 tickets in… i pasted the Blizzard response and even linked the thread etc… just incompetence.
What exactly did you write in your support ticket?
I did ecaxtly that and well… you can see the reply some posts above 
EDIT:
Got a response to my fourth ticket at 15:33 CET, same person as last time, and literally the same answer word for word:
Hello,
This is Sharlen from Microsoft Rewards support, assisting you with your Service Request 7075946960.
I understand that you are experiencing issues with your account. To help us resolve this matter, could you please provide additional information such as a clear description of the problem you are encountering and a screenshot of the issue or error?
For more information about Microsoft Rewards, you can click here: Learn more about Microsoft Rewards.
Regards,
Sharlen
Microsoft Customer Service and Support
I told them four times now what the problem is in detail, even copied Blizzards mail and linked to the forum thread.
At this point i think it is clear that neither Blizzard nor MS give a single F about the customer.
Let’s be real here, it is Blizzard’s fault not MS, they changed their system and can’t get it to work with MS codes pre change.
Now they tell us to contact MS to refund us… which as you can see is not possible for me.
I spent 2 weeks now wasting my time, energy and nerves to either get the PBP i paid for in MS points or get my points back.
In the end i am the idiot, best case i get my points back someday, so i have nothing for enduring this insanity of customer service.
For something that doesn’t even cost Blizzard anything, it’s all digital, just send us a working code, give us platinum, whatever… or just piss of customers that paid for your products for like 30 years now.
UPDATE: 18.05.2025
So finally after 15 days 4 Blizzard and 5 MS Tickets i got my points refunded.