A friend of mine does, "I very rarely check my messages, so if you can, please send a text or email me at [...]" -- I think that's pretty successful for her, including having got texts from NHS people.
The professional voicemail greetings is the cornerstone of any good business. Not every voicemail recording is relevant to every situation. This guide is going to demonstrate some of the specific custom voicemail greeting examples for doctors, dentist, real estate agent, lawyers and other professionals. A doctor’s practice typically either has a secretary or the doctor themselves to take calls. It’s vital that you have a different voicemail based on the area of the practice the patient is calling. The information differs, but the tone of voice remains the same. It should be warm yet professional because many patients will be distressed or worried about potential symptoms and conditions.

In my (US-based) experience, doctor offices & the like have a place where you can fill out if they can leave messages or not (and some even have asked detailed messages vs callback messages), so that's my perspective! And that I can set different things for different numbers. So my cell phone they can leave detailed messages on any matter, my mother's house phone is detailed from billing only and otherwise callback, her cell phone is callback only. (And they also aren't allowed to tell her anything other than billing, so even if she does call them back about anything else! That was just a measure set up when I lived with her one summer & had no cell reception at her house.)
For example, you might include messages about changes to your operating hours or event cancellations, direct your callers to an online resource for more information, or provide additional instructions on temporary protocols during the outbreak. Reassure them about the precautions you’re taking to ensure their safety and provide specific information when possible, such as when you plan to resume normal operations.