I want my money back now!!

If you have received an invoice from Apple, it will be stated on the invoice for what you have to pay.

Tap on Report a problem on the invoice.

Or try to -> Request a refund for apps or content that you bought from Apple.

Request a refund for apps or content you've bought from Apple – Apple Support (UK)

If you have requested a refund, you must wait until Apple has approved. Then you will receive a message from Apple.

Refunds are not guaranteed. For more information, see the Terms & Conditions.