When The Phone Does Ring / How You Gonna Go / WIth Your Hands On Your Head / Or On the Trigger of Your Gun

I just called a friend's cell phone and instead of ringing, a woman's voice told me to "enjoy some music while they try and reach the party." And then "Guns of Brixton" by The Clash played. Eventually my friend's voicemail picked up.

I don't know how to respond to this.