Bad service and lack of competitiveness

I have been billed an insurance since 2017 without it being charged to my account and in September 2019 a debit order was effected without my knowledge and I subsequently reversed and they stop my Dstv pending the full payment of this amount. I,then lodged a dispute which took ages to get resolved and during that time I didn’t had services. Having resolved the insurance issue they then billed me full amount for the services which were not rendered . I have been visiting Dstv and making calls which didn’t take less 30 minutes each whilst the problem remains unresolved I cannot forget to mention attitude of the consultants and their teams leaders who lack courage and understanding of problem solving. From Friday 01 November to yesterday I have made six calls but the problem remains unresolved. The fact that multi choice has no competition make them to be at liberty to badly treat customers with their unprofessional, *********** and disrespectful customer care agents