How do I solve this problem with an IOS app?

I purchased a Music app from iTunes from my iPhone, it was working fine a while, and then didn't have any sound. I erased it from my phone, and tried to reinstall it. But when I went back to the App Store, I didn't see it listed anymore. I did a little research, and found out it was only supposed to be availalable in For purchase in Grenada. I paid for it, But I can't seem to get it back. Even Apple can't seem to help me. What can I do?

Fuhgeddaboudit!

You purchase a different iOS App.

Once it is no longer available, that is it.
you can contact Apple for a refund or credit.

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