Poor service

British airways airport check-in at O R Tambo has pathetic service. I had arrived prior (about 5 - 10min)to the check in time just to check my bags in because I had already checked in online about 18hours ago. I stood in the queue for about 15 minutes because there was only 2 counters at the online check in that was open. There were 2 customers that stood there for so long with some sort of a problem which made me wait because the staff was on a call trying to sort the problem out and when it was my turn the lady told me I am late and the bags are already gone but they just took the previous customers bags even though they made me delayed. I am very disappointed with the services. They told me to leave my luggage with someone but I had no one there so I had to miss my flight.