Truecaller is not blocking Voicemails Updated September 27, 2017 01:47 Follow It is unfortunately not possible to block voicemails at this time. We're hoping to implement this in the future. Related articles What is a hidden number? Where do we get our data? How can I subscribe/unsubscribe from the Newsletter? Why do I only find certain phone numbers? What is the 'Star badge'? Comments 0 comments Article is closed for comments.