Managing the loan or lease: Vehicle loan or lease

When SunTrust was acquired by Truist, my loan was booked in and then immediately reamortized due to a misinterpretation of my original maturity date after taking an extension. My rate was 5.02 % but got increased to 5.55 %, which created compounding issues for the remainder of the loan ( approx 3 years ). Additionally, I was charged approx $2000.00 in NSF charges over 2 years because Truists online banking system wouldnt allow me to add a new payment method so if transferred funds didnt post in time then Id get hit with a fee & I requested for this to be fixed more than 10 times and not once did anyone follow up.