Is there a voicemail recording time limit?

ExtraByte Posts: 7 ✭✭

On average I spend 0-10 minutes on the phone monthly so I was thinking about changing my plan from unlimited calls to none and buying the 60 minute add-on each month.

My only concern is spam/bot calls. If these go to voicemail and they don't hang up, could one message take up the full 60 minutes or does the voicemail get disconnected after a specific amount of time?