Hello Osman Riaz (Student),
The only way to resolve issues like these is to submit a spport request. You should be creating a billing support request. They are completely free: https://azure.microsoft.com/en-us/support/create-ticket
You need to only ensure the category is billing.
To do this see the steps here:
You can mark it 'Accept Answer' and 'Upvote' if this helped you
Regards,
Abiola