This number is a scam.  It starts as a recorded message about your credit card interest with Heather then you go to a person that cannot even speak English.  When you call back there is no answer.  It is probably an inmate who is bored in prison so he is trying to scam people.  Why are prisons so lenient?  Because the guards are furnishing the cell phone for a price which is also illegal but unfortunately we have corrupt prison systems that allows this to happen.