Consider adding 'You can also email your query to us at [insert email address here]. These queries will be answered within [insert time frame].' Again, if you intend to make a promise to your customer in a voicemail, ensure you keep it.
Website: https://www.mightycall.com/blog/the-best-services-to-record-a-voicemail-greeting-for-business/

Business professionals are also encouraged to keep their voicemail organized. Delete any messages from the office phone that are no longer necessary after calls are returned, and write down any phone numbers that are needed at the time the message is listened to. If modern voicemail service is utilized, such as that supplied by Voicemail Office, in which voicemail and fax messages are received in a staff member’s email inbox, the individual should write a short explanation in the body of the email if forwarding any voicemail messages to other staff members.
Hiya analyzes spam and robocalls, and the sheer volume of unsolicited and automated calls people receive has likely caused us to answer the phone less. According to Hiya’s analysis of 13 billion monthly phone calls, consumers only pick up 48 percent of the phone calls they receive.