If you want to check if the purchase went through ok:
View your purchase history for the App Store and other Apple media services - Apple Support
or
See if you can re-download the four songs you purchased.
Download previous iTunes purchases on PC - Apple Support
or
Redownload music from the iTunes Store on your iPhone or iPad - Apple Support
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If trouble-shooting is still needed: Wondering if this info. from Apple support (link below) may be helpful.
"Learn what to do if you can't redownload an item or if you don't see the item in your purchases."
If there’s an issue when you redownload apps, movies, or other content from Apple - Apple Support
If you're in India, click on this link to read an April 2022 notice 'About billing for Apple subscriptions and media products in India' About billing for Apple subscriptions and media products in India - Apple Support
Additional verification that may be required when making purchases in Europe :
About billing and purchases in Europe and Japan - Apple Support
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If More support is needed:
You might want to reach out to the Billing Support Team or Apple music support:
There is a “Get Support” Link (or an App) at the bottom of their websites (links below).
Billing and Subscriptions support website
Subscriptions and Billing - Official Apple Support
or
Music Support
Music - Official Apple Support
