Appalling Service from DStv Call Centre Agents & TEAM LEADERS

My DStv account was in arrears due to incorrect billing on an incorrect package. I was being billed on the premium package after down grading to compact package. I phoned the DStv call centre for an entire month trying to sort out the matter, which was never sorted out due to the clear incompetence of both the call centre agents as well as the team leaders...who ironically are ALWAYS in meetings and NEVER returns calls. I phoned on 4/11/2019 and spoke to Samke Ngcobo who escalated for an account correction to be done and then again with Rivek on 08/11/2019 who reconnected the account and then also escalated the matter, but still nobody from the finance department phoned back. Then on 18/11/2019 I spoke to Andrea who indicated that she reversed the incorrect charges and that I can pay R419.00. However, when I checked this was incorrect so I phoned again and spoke to Candice on 20/11/2019 who indicated that the reversal was not done. On 27/11/2019 I phoned again and spoke to Nokuno who inicated that a team leader, who is sitting right next to her will call me back....never happened. On 28/11/2019 I phoned again and spoke to an agent who said that the team leader (Nandipha Makosi) will return my call...never happened! Again I phoned on 30/11/2019 and spoke to Dylan, who then transferred me to the team leader (Adrian Filander), who gave me his email address to dispute any costs...to this day he has not rep**** to my email. I then phoned again an spoke to an agent in Mount Edgecombe KZN who actually told me that team leaders do not return calls and that the team leader who did not respond to my call most probably blocked me or added me to his Spam.....Seriously! Thereafter my last attempt was made on 02/12/2019 where I spoke to Raquel in PE, who then called her team leader to assist (Kerwin Hahndres), who indicated that I should go to a walk-in centre to sort out the matter....now why is there a call centre? Also, when I indicated that I want to close my account with DStv, Raquel was more interested in stating that I should pay the monies owed in the background, which is utterly unprofessional to say the least....because they are more worried about customers paying, but they cannot deliver a service. It is quite evident that the DStv call centre agents and the so-called team leaders require major training, because they do not know what they are doing, and yet people are paying for this ******* service!!!!!