Unsatisfactory service

I was at the Centurion today formy 2:30pm appointment today was served by a very rude lady she was at counter 1 where we submit our documentation. She declined to accept my flight confirmation which was supp**** by the DTIC travel agent.When I asked her so what is the solution she wanted to rebook for another appointment I refused because I will not be having another time to go back to TLS centre.She took my documents to my surprise she didn't request my company and personal bank statements and the copy of the passport of the person that invited me and the internary of the activities that I will be doing during my stay which was stipulated on the application form.i ended up giving it to her to add into my file.When I get to the Biometrics the lady noticed that some information was incorrectly added as she threw away my initial application cover that I came with.I honestly don't understand we should be treated as if we are using the TLS employees money to travel and be intimidated that we cannot even ask question then they sabotage our applications