Request For Settlement Letter not being Honoured

Blue Label Connect its a "***" company I've been asking them for a settlement letter and all they've been doing is telling me **** and sending me from pillar to post each time, week in and week out. I was initially told that the letter would be sent to me within 48hours of me settling the amount, however, 2 weeks in nothing has been received. All 3 consultants that i have spoken to since, namely, Faith x4, Tanya x3, and Nosiko are EXTREMELY RUDE AND HAVE NO CAPABILITY TO DEAL WITH CLIENT QUERIES I also requested to speak to a manager each time I called but was told that their managers DONT want to deal with customer complaints. I urgently need this to clear my name at the Credit Bureau as this is causing major havoc to my finances.