Poor Service

I took out a black Friday contract with multi choice in 2020 which expired in November 2021. November 2021 when I went into my account I realized that they have billed me incorrectly and immediately called customer services and was assisted by Nhlanhla Dlamini on 25 November 2021 and advised that the matter would be resolved and was quoted Case#INC-858422. I called again on 27 November 2021 and was assisted by Reva and she quoted Case#INC-860965. On 29 November 2021 the incorrect debit order went through. 30 November 2021 I get a call from Multichoice trying the sell me a new contract and informed the rude lady that I am not going to take any contract whilst my query is not resolved and she went on to explain that I was billed correctly and did not want to listen and told me how useless I am. Did not get the lady's name but the number she called is ***. Tried to call customer service and their line was bad and hung up after 9 minutes.