Hello,
Please contact Azure Billing Support:
https://azure.microsoft.com/en-us/support/create-ticket
Also, just to mention I do not believe you can sign up with a debit card:
Virtual or pre-paid credit or debit cards aren't accepted as Payment for Azure subscriptions and unfortunately you won’t be able to sign-up for an Azure subscription without using a Credit card. Also, American Express (AMEX) is no longer supported as a Payment Instrument for Azure accounts.
You may want to contact your bank's fraud department as this may not be a Microsoft related charge.
If this is helpful please accept answer.