I am very unhappy with the way Inland Empire Hyund...

I am very unhappy with the way Inland Empire Hyundai handled my paperwork of my trade-in. several weeks have passed since I purchased my new car, traded my old car in, signed the release of liability, and weeks later I'm still the registered owner of the old car, according to DMV. What takes so long in turning in that paper to DMV so my name is no longer on title/responsible for that older car in the eyes of DMV? Had I been told it was going to take this long, I would have walked it in to my local DMV office myself.