I was charged twice for particular order.

I have ordered Ipad pro 2018 11 inch, Apple Pencil 2 and logitec Slim folio from apple store to Canada Toronto. For payment i had Entered debit card detail. Money was deducted for Pencil and slim folio but as Ipad was more expensive than my Card limit, i was asked to update the limit. When I entered the card details of my another card i was charged for Ipad and again charged for Pencil and logitech slim folio. When i talked to customer care, they told me it will be refunded to my account once order has been shipped and she was able to see the payment but now ( 2nd June 2019) when i call them. They were nt ready to accept that payment has been made from first card. I have mail from my band and even the message that it has been deducted to apple store. How can i get my money back ?