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How to investigate a billing charge from Microsoft
Check your Xbox purchase history | Xbox Support
How to get a refund on a Microsoft subscription
Subscriptions & billing | Xbox Support
Xbox subscription cancellations and refunds | Xbox Support
View your Microsoft Store order history - Microsoft Support
Use Smart charging in Windows - Microsoft Support
Why has my credit/debit card been charged when I haven't made a ... - Skype
Metered Internet connections: FAQ - Microsoft Support
Contact us | Xbox Support
How much does it cost to call mobiles and landlines from Skype?