Shocking that this is our local carrier...not Proudly South African

I recently travelled from Munich, Germany on a long flight SA265 (10h 15 min) to Johannesburg before my final leg home to Cape Town. Upon embarking on the aircraft, there was an announcement that the entertainment system wasn't working properly after the receipt of a few complaints. The Cabin Crew, being non-chalant and have a no-care attitude, were talking loudly amongst themselves before they decided to announce that they will have to reboot the system which will take 30 min. After they did this, it failed again and they tried a second time which also was unsuccessful. Eventually, they announced that the entertainment system is out of order and that unfortunately, there's nothing they can do about it so basically, informing everyone to rest and sleep. Why could this not have been checked beforehand? To sit for 10 hours without any entertainment activity, was a huge ask but what does one do - count sheep and count more sheep until you eventually fall asleep. On top of it and to make matters worse, the cabin crew has this very casual no-care attitude and continues to blame everyone else. SAA needs to get their service standards right - this is unacceptable and they have to be the last carrier available before I ever fly long distance with them again. So disappointed and not proudly SAA at all...