How do I contact Microsoft/Xbox to make a complaint?

Depends what type of complaint

If general complaint about xbox then contact support and talk to a supervisor

If about enforcement that can only be done at enforcement.Xbox.com and feedback

Hi Leon S, my name is Daniel and I would be happy to help.

If your refund was denied, and you believe it is a mistake because you have not requested many refunds this year, please respond to the email you received informing you of the refund rejection. In your response, explain in detail the reasons why they should reconsider their decision and why you believe they should accept it. This is the only way to appeal the rejection and get back in touch with the team that originally handled your refund request.

If you have not received any email informing you of your refund rejection after 24 hours, even after checking your spam/junk folder, I recommend requesting a refund again using this alternative link:

https://support.xbox.com/forms/request-a-refund

If your refund is denied again this time, you should receive an email informing you of the denial as this is the only way they have to communicate this information when a refund is requested through that link. When you receive the email, respond to it as I mentioned before.

Remember that this is a public forum of the Microsoft community where we are players like you who try to help/guide other players to find the solution to the problems they are experiencing, however we do not belong to Microsoft, this means that we do not have access to the accounts or information of other players.

Credits: https://answers.microsoft.com/thread/8bcbfa91-e8d0-4cd1-ae55-570668533c23

If this information was useful to you, let me know and if you need more help I will be attentive to continue helping you.

Best regards,
Daniel.

Hi and thanks for reaching out. I hope you’re doing well. I'm an Independent Advisor and a Microsoft user like you and I'll be happy to help you.

I understand you need assistance with your active Service Order. Kindly try checking its status by signing in at https://account.microsoft.com/devices. It should be like the screenshot below.

But if it has been no movement since, you may try contacting Microsoft Xbox Support at support.xbox.com/contact-us > click on Contact us > Hardware & Network > Warranty, service & repair > Other device > Next > you may be asked to sign in to your account.

Just a friendly reminder though, this is a public user-to-user support forum. We're users just like you helping other users. We do not work for Microsoft and have no access to any user account so there is nothing we can do or check from within the forum. We have no input on Microsoft's policies, procedures, or design decisions. Microsoft Support personnel do not staff this forum. I hope you understand.

Here's the screenshot;

I'm sorry it didn't work for you. Again, just a friendly reminder though, this is a public user-to-user support forum. We're users just like you helping other users. We do not work for Microsoft and have no access to any user account so there is nothing we can do or check from within the forum. We have no input on Microsoft's policies, procedures, or design decisions. Microsoft Support personnel do not staff this forum.