Congratulations! You've recorded a professional voicemail greeting that your callers love. If you want them to keep loving it, you'll need to update regularly. Adding seasonal information and varying your message keeps your greetings fresh, which is especially important for businesses whose clients and customers call in on a regular basis.
The only problem I have with the voices is that the French and Spanish ones are really hard to understand. It’s almost like the voices are speaking English words based solely on French and Spanish phonetic rules, instead of sounding like English in a French or Spanish accent. Either way, it was a jolly good time, and I recommend that you at least play with the app, if not actually use it on a regular basis.

Some phone systems require the recording to be on a mp3 or wav file, and some you just have to record the greeting right into your phone. This last way is likely one you have tried already. Use the link here to find a FREE voicemail greetings for business. These are scripts you can modify for your use.
Open Phone → Make sure you are on Keypad → Press and hold the number 1 for a few seconds. It will call your voicemail; You can check your voicemails here. 3. Force close and reopen the Phone app. To force close Phone, on iPhone X and later swipe up until you see the apps in task view, then swipe up again on Phone.