Hi AbdulFouzi,
I am Vijay, an Independent Advisor. I am here to work with you on this problem.
You should follow the below process for refund
https://support.microsoft.com/en-us/help/400064...
Another way to process the refund is through MS Store Help
You can talk to support by picking up appropriate country
https://support.microsoft.com/en-us/help/28808/...
Do let me know if you require any further help on this. Will be glad to help you.