NAV system

I bought a 2015 model Jeep Cherokee. Everytime I take my car for a service, they tell me there is no software update yet on the Nav system. 3 years later? I keep getting lost because I cannot rely on the maps. Its unsafe and unreliable for a woman. I have tried updating the nav system myself online, and the instructions are confusing, and sometimes your VIN number is not picked up. For the price you pay for this 'high end' car, you dont get the expected support.