Poor service delivery for boarding passengers

I booked a linked flight from Durban to Upington via South African Airways, when I landed in O R Tambo 04 August 9:47am I asked to directed to the ques to check in, I was held up in the the ques, they where so long no one helped the customers in the que most of them ended up having to change the ques, after checking in I had to rush in the next que to check hand luggage at that time before 11am the staff of SAA changed shift dropping everything and leaving customers who need to board the flight unattended we had to request out our purses and cellphones from the trays where they check them, As I was rushing to the boarding gates the shuttle leaves right in front of me, I ask on of the workers to get another shuttle for me she said it was too late for me, even when we both heard the intercom calling the last minute boarders they still didn't get me a shuttle. so they said I must go book my flight, when I requested for a new flight explaining they said I have forfeited my ticket I must book a new ticket to go to Upington I told them that was not fair at all you guys gave me poor service as a result I missed my flight, my luggage handle was damaged also this is unacceptable