Adjustment of Status - I-485

Hi i have a bit of a rare case. I was residing in the Caribbean when my dad filed I130 back in 2002, he's a USC. He called the Barbados consulate for years and they kept saying the case is still in process. After years of no response we gave up. in 2009 i applied for a B2 visa to visit and have been travelling to and from the USA for vacation. I came in Feb 2014 and we decided to find out what really happened so we did an info pass app. At the appointment we were told that multiple notices were sent to me for my interview which i found strange seeing that my address never changed and nothing was ever received. At the time my dad filed i was under 21, now i am 25, does he have to do the I130 over? At the infopass app i was told to go ahead and apply for the I485 but im still awaiting my I797 notice. I'm a bit nervous as time has passed and i dont want the IO thinking i didnt want the GC thats why i didnt come to the interview at the consulate. We finally got my receipt number and its showing my case is in the interview phase from since 2004, does that mean it will be processed quicker? I need anyone with info to help calm my nerves! thks in advance!