Windows 10: Over Charged for App at MS Store

When I clicked to purchase an App https://apps.microsoft.com/detail/9n0866fs04w8?hl=en-US&gl=US , in the MS Store, it showed $11.24 25% off. My credit card was charged 14.99 + tax.What can I do to get reimbursed for the over charge?

:)

 

Uninstalling MS Store apps?

I uninstalled them (Revo Uninstaller) but in MS Store all the apps are still on the list... with "Install" button next to them. I want to remove them from that list.

 

Remove non-operable App downloaded from MS App Store, to remove Already Own

Remove App downloaded from Microsoft Store App Store because:

I mistakenly downloaded on PC (MS Surface). When I try to install the app on my phone, it says - already owned. But I cannot get access to, or install it, on the phone. I have tried all steps as suggested in link below.

Redirecting

I can hide the app in my account library on the pc but to no affect on the phone.

The app does not appear on either the PC Application list (in Settings), nor in the phone list of Apps.

I want to install the app on my phone.

 

Store crashes in window 10 : you'll need a new app to open this: ms-windows-store

I just added my wife, Melissa, as a new user account and now the Microsoft Store app is not even listed. When I click on adding an app from your Edge homepage it still shows the window:

You'll need a new app to open this ms-windows-store

I have already typed in the powershell commands suggested and restarted and its still not working. What is the next step? I am using a Dell XPS All In One that started with WIndows 8 - upgraded to 8.1 and then upgraded to WIndows 10.

Thanks in advance, Jeff