Insurance and Billing issues not sorted after 8 months

Please assist me in solving a problem I am trying to solve since June 2021. The problems that I need to solve is: 1. I upgraded the 'Contract 1' on 14 May 2021 to a A32. The phone is insured for R5000 with a premium of R115. From June 2020 until September 2020, I was charged double on this account and have not received my money back. 2. I upgraded the 'Contract 2' on 14 May 2021 to a A32. The insurance premium on the account for this contract is R33, which means the phone is not insured for the correct amount, as it is exactly the same type of phone and contract as 'Contract 1' above. 3. On 4 August 2021 I signed a new 'Contract 3'. According to the insurance, the Samsung phone insured is a Vodaphone. The billing for this contract is added to the invoice of another contract. I need two separate invoices for these two contracts, as with all my other contracts. I tried to my frustration to solve these problems via the normal channels: 1. On 16 June 2021 I made a call at 9h00 with reference number ***. No one came back to me to resolve the call 2. On 7 September I made a call at 7h52 and spoke to Lebo. No success 3. On 7 September I also spoke to Grachia (***) 8h02. With reference number VCAPOL***1. No success 4. On 7 September I also spoke to Grachia (***) 8h15 with reference number VCPOL***1. No success 5. On 18 November I was on the phone from 12h11 untill 14h06, with no success. 6. On 23 November I send an email to the Vodacom Shop that did my upgrades to see if they can assist me with the problem. No success