Poor customer service and empty promises

After Nelspruit Gems offices lost our membership application papers and only after I had to go into the office to enquire about our application,had they found my papers. They caused a 1 and half month delay on the application. I then asked for feedback regarding the delay, I have been at the Nelspruit office more than 4 times and they keep on telling me they will call me. Until today no call was made to explain that they made a mistake. I then called the call centre and explain my problem and complaint I had. They kept on transferring me to a team leader that could not assist me. They also promised that the membership department will call me and discuss the issue bit again no one called me. I called them about 6 times and still no feedback. I also send 3 emails to there enquiry and complaints department bit not even a email back to say we are working on the issue. They are really unprofessional and can't even give you a regional managers contact details.