Sorry about any delay you're encountering! We try to respond to tickets as quickly as possible in the order they were received. We appreciate your patience!
I'm sorry for the system delay with your new account. If you're still unable to finalize your account registration here accounts.mojang.com then please contact us here help.minecraft.net/hc/en-us/… with your account info and we'll help as soon as we can ^SA
If you were charged for Minecraft but didn't receive an email containing a Transaction ID, the charge(s) is most likely in a pending status, and can be resolved by contacting your bank. I hope this helps! ^SA
Your game should stay signed into the same Microsoft Account each time it's launched, but if you need help with a specific question about Minecraft for Windows 10, you can contact Xbox Player Support here: beta.support.xbox.com/contac… ^SA