Bad service & ticket theft

On Sunday 3 January we were on our way back from OR Tambo International Airport! We checked in online the day before to make sure that is done and that we only had to drop our luggage. Drop off for luggage closes 45minutes before the flight and we were there ready and waiting in the que for a good 10-15 minutes! It was Sunday mid day and extremely busy! As we reached the front and handed our luggage in we were told that the drop closed 5 minutes prior. We advised the lady that we were already standing in the que but she was of no help only told us sorry its closed you need to go and see if you can get on the next flight! Please note that this is still 40minutes before boarding time! The supervisor then also came passed and said sorry its now closed! I was furious because yes the airport is busy but we were on time for drop off but due to the ques that's long and busy it made that we went overtime which is not our fault! We had to go to the counter and was advised that two new tickets back to CT will cost us R6000 the more I tried to explain that we were already in the que waiting the less they were interested! At the end we had to get new tickets from Lanseria costed us over R4000 and a uber of R600. I mean who does just have that kind of money to spend! Upon going on to their facebook page I saw that I am not the first and only one that it happened to and with our arrival to Lanseria staff there also told us that they have heard of it before and customers complaining! I would really like to know what they are going to do about this and how are they going to compensate us for the loss! Seeing that both Kulula and ACSA commented on my posts that we had to be early after I said that we were but due to the long ques and waiting it made us late!