JetBlue Airways review: sold my ticket, after I bought

I bought a ticket for my mother ( Zenaida Hilario De Bonilla ) 72 years old female, Tuesday 04/29/2014 to fly from Orlando, FL. to Newark, NJ.. fly # 324, confirmation JJLPIU, that will leave Orlando, FL. at 1325 and arrive Newark, NJ. at 1613, on 05/03/2014. We arrived Orlando airport around 1145 am, 1 hour in 30 minutes prior the fly. The ticket agent her name was Esther, stated that my mother was not in the list, then because my mother health condition she needed to fly the same day, I purchased other ticket cash more expensive than the previous ticket, t he fly # 328 and the time was from leaving Orlando, FL at 1850 and arriving Newark, NJ. at 2015 at night.. After I purchased the new ticket, I spoke with jet blue supervisor at that time, Mr.Jason, regarding this matter and he verified that all my information was in the computer, my first ticket was reimbursed.
This kind of inconsiderate situation should not happen to anyone, specially to an eldery person. I would like a meticulous investigation of why my mother was not in the list . I would like to hear from you what was done regarding this matter, as well.
( I had copies of all document )