GM was the same way with customer service at dealers. Ever since the new CEO Mary Barra has been in charge I have noticed a huge improvement in customer service. I frequent 3 Chevy dealers for parts and all have had a 180 degree turnaround. In fact, they all have at least one female employee working the parts counter now, that never used to be the case. A lot of the negativity has been removed, I think its something Hyundai needs to look into.
The car in my sig had the dreaded ignition switch debacle so idk if my experience is different but I get a ph call from some GM cust service center like twice a year now asking how my veh is doing and if there are any services i need and they offer to schedule it with a dealer of my choosing if i need a service. They basically call to chat for a minute.