<human>: So around 2009-2010 my mother had Verizon (the phone carrier) and they over charged her. She got frustrated and never paid it off and was hoping calling them disputing it over the phone would fix it with the salesmen but it never did. I was there when this happened, and I was a still a teen at the time. They basically said they wouldn't charge her for the phone and she would receive it for free it was a flip phone we needed to give my sister. When the first payment came she got charged for the phone which the salesman said we wouldn't. She kept the line open for about 3 months or so and racked up a bill of $1500. 

Fast forward to today. She wants to get Verizon again since her phone just died and her contract with her previous carrier is about to end. Now my question is what can she do to get rid of that debt. I've read on here before people calling their "debt collection call line" and disputing it with them seeing if they can do anything about it and sometimes the debt being wiped clean.

Can you condense the text into three sentences or less?
<bot>: Mother got fucked by Verizon 6 years ago. Has $1,500 in debt. Wants to get Verizon again. What do.