Its an ongoing problem. I have used it twice this year both times got the same thing. Everything worked but each time got 2 messages dumped on voicemail box both 0 length 1 was the recording one was blank. Recorded message would delete ok blank I had submit trouble tickets on. First one was on Jan 22 second on May 8th.
They don't seem to want to address the problem just clear the bad message and go on.