Hyundai maintenance plan sucks

I have a fully paid maintenance plan on my staria. Has a problem with my battery as I got stuck on the road. The vehicle was brought in to Hyundai mobeni, Durban and is there for two days now. They charge it and it says good but recharge again. They did this 3 times now and has not replaced the battery. I don't have a vehicle and have to Uber to places. This is ridiculous with Hyundai. Pathetic service and maintenance plans should be carefully considered. Disappointed.