Kia Silverton poor service

I took my car for a service on the 31st of Jan at Kia Silverton. On the day of the service I received a notification that the battery was disconnected but was not really worried as I thought it was probably part of the service. The next day, the car didn't want to start and this has never happened before the service. We ended up jump starting the car. I sent them a message to tell them about the problem, they just ignored me. We then took the car to them, still didn't get any assistance. They weren't interested, didn't even try to check and see what might have caused the problem. It's really disappointing for a company of that calibre, it's actually a shame. The fact that the car was working fine before they touched it, they should have accounted for something or atleast try to find out if everything was the way it was before. It's sad that we trusted them with our vehicle and all they did was mess it up.