Ringtone

Hi Angiew77,

We'd like to share some helpful guidance to assist with this issue you have assigning a purchased ringtone. Looking over Use tones and ringtones with your iPhone or iPad, we would recommend checking the steps to see if matches the process you tried.

Buy ringtones from the iTunes Store

1. Open the iTunes Store app.
2. Tap  More.
3. Tap Tones. 
4. Find a ringtone that you want to buy, then tap the price.
5. Choose an option to automatically set the ringtone. Or tap Done to decide later.
6. 

7.You might need to enter your Apple ID password to complete your purchase.

This should show the prompt to set the tone and further steps here:

Redownload ringtones purchased with your Apple ID

1. Go to Settings > Sounds & Haptics.
2. Under Sounds and Haptic Patterns, tap any sound.
3. Tap Download All Purchased Tones. You might not see this option if you already downloaded all the tones that you purchased or if you haven't purchased any tones.
4. 

If you continue to have an issue, you can contact Apple Support to further look into this or request a refund via Request a refund for apps or content that you bought from Apple

Thanks for using Apple Support Communities.