Voicemail to email feature rarely works. If you get a voicemail at all it will disappear from your voicemail box before you can listen.
Voicemails are often not sent to email, and simply disappear before you can listen, so you'll never know you had a call. Only some calls show up in your call log so you'll never know someone called you. Outgoing calls sometimes do not appear in your call log. No customer service, unless you consider service to be "sorry for the inconvenience".
Sometimes people try to call your number and just get an error message. Unless you have a premium operating system you're going to hear a lot of static, dropped calls, echos, cut outs.
Product or Service Mentioned: Magicjack Phone Service.
Reason of review: Bad quality.