Double billed again

For the past 2 Months i have been trying to solve a billing dispute whereby i have been double billed for my fiber connection since I moved. My infrastructure was moved from openserve to vumatel and i have been charged for the openserve contract each month since I moved. I logged a dispute SR*** on th 6th of July immediately after i noticed the error. I was ensured that they will credit my account. This did not happen and i have had to phone back and follow up at least once a week for the past month and a half only to get the same story, that the issue will be escalated. I am sitting with the same problem this month and will have to stop my debit order with vodacom and pay them the correct amount going forward. Which will most likely result in bad credit rating on my side until the dispute is resolved, which seems like it might take a few months to correct. This happened at a time where i could least afford it due to pay cuts resulting from the covid crisis. Vodacom has no will to sort this I wrote this this review as I see no point in phoning them for the umpteenth time and getting frustrated with a consultant who has no real say in the matter.