2 calls today. First call I was unable to answer and caller did not leave a message. Second call I did answer and there was no one on the other end, then they hung up. Must be a spam call, I have been getting many of them lately.
I am receiving 2 or 3 calls from this number a day and they never leave a message. Getting sick and tired of this crap. Must be a telemarketer who is running a illegal scam.
Try shutting down any way of them getting your voicemail and ignoring mystery numbers. As long as they're getting something, they're likely to keep calling. They get nothing, they eventually get irritated and stop calling you. It takes time and patience.