JD BYRIDER,CNAC finance CNAC Finance over charge for vehicle cnac rep. christie verbally rude to me tried to down grade me,called my a liar indianapolis, Indiana

I purchased a vehicle from jd byrider in oct 2010 now having transmission problems I have to pay to get fixed. and the cnac rep christie is very rude and disrespectful  calls me a liar , tries to down grade my character. I have had this car for  2 yrs. with no problems in paying on time except maybe 2 times .Today I'm cant quit make my payment  and chrisite has called me over and over even at work. I told he that I was with a patient and not to call me at work were not aloud personal phone calls. she proceeded to question me about my car payment I almost hung up. I told her that my check was not completely deposited onto my debit card (half paper half direct deposit). and that  i would call her when I got off work which i did 4 times, i was expecting to borrow the money from a relative because I knew my check was not enough to cover all bills, by they time I got off work Im became aware that the family member did not have the money to loan me I started calling christie to let her know and when she finally called back at 6:45 pm she was very rude and disrespectful  towards  me. and stated that I was a liar and i need to be held accountable (Im very much accountable for all my actions,life and so fourth ) I am not a 17yr old child and I refuse to continue to be treated as such by chrisite  this is not the first time that she has spoken to me in this way. I told her to come get the car she stated it's not about coming to get the car but my payment. I told her that I would have the entire amount on dec 14 with my next car payment. she continued to speak to me in a very rude negative manner. I told her that I would be requesting another rep . she stated for me to show proof that my money was short she wants to see my check stub. This is very unprofessional of her and cnac she also stated that her boss and the next rep would be the same way with me, as if I'm wrong for requesting another rep. I have been a good and faithful customer and paying my car note.