Hi Suzanne_51. and welcome to the Apple (user-to-user) Community!
Re: "I brought an app pack for my son in EA game and have been charged for it but not received it… twice! I have requested refund but doesn’t give any option to provide info "
You may need to check you have an iPad compatible version of the game, if you son uses iPad.
Apple support have articles online that may be helpful:
You might be able to restore a non-consumable purchase, such as an upgrade to a pro version, an extra feature in a game, or a subscription:
See what to do: If you can't find or use your in-app purchases - Apple Support
How in-app purchases work: Buy additional app features with in-app purchases and subscriptions - Apple Support
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Re: "How to request a refund for unreceived In-App purchases in EA Game?"
Some purchases may not be refundable by Apple, because they do not have the purchase-money..
Eg: In some games, in-app purchases are used up in the game when purchased, and the app developer has the money..
See: How to contact an app developer - Apple Support
or
How to: Request a refund for apps or content that you bought from Apple - Apple Support
Else: The best source of help for a product not made by Apple (a third-party product) is the company or person who made it—its vendor or developer: See how to: Contact a third-party vendor - Apple Support
All the best :-)