Rang and didn't leave a message

Called and asked for someone named Joe? I don't know anyone named Joe lol

rang previously and didnt leave a message, this time hung up when I answered

I called back number (07) 3569 8206 reached voice mail for a charity company but did not say the name.

Rang and didn't leave a message. Rang from a landline and it was an unattended line. Voicemail stated it was on behalf of a charity and if I didn't want to be contacted to send them an email. They didn't clearly explain the email address but it was along the lines of callingenquiries @ protophone.com. Pareto phone? No idea. Annoying, they rang yesterday too.