I purchased a ringtone and it’s not on my purchased ringtones to be downloaded

If you have followed all the steps and instructions in Related Article: Use tones and ringtones with your iPhone or iPad and if you still need help, get more help and assistant from Apple directly, see Contact Apple for support and service -> Contact Apple for support and service – Apple Support (UK) 

Have you get more help and assistant from Apple directly?, see Contact Apple for support and service -> Contact Apple for support and service – Apple Support (UK)