Billing issues, no feedback

I app**** for wifi through Webafrcia, The router was delivered 2022-06-22. The fibre installation was only done on 2022-07-19. When I received my statement, they billed be since 2022-07-01. How can I be charged for 19 days if there wasn't even any connection whatsoever. I spoke to several agents and they said that it was fixed. On 2022-08-01 the deducted the full amount R1945,70 that was charged since 2022-07-01. I then spoke to another agent and asked for the correct statement. No feedback was given. I then reversed the payment (as I did not budget for that amount) I made contact again and asked for the correct statement. They said that I need to pay the whole amount R1945,70 and they will credit me for the following months. They disconnected the internet. I considered paying the full amount and accepting the credit. I spoke to another agent this morning, and she said the credit was declined. So I now need to accept the fact that I owe R1945,70 for July although I only used the Wifi for 12 days, according to them I must pay the whole month, it was not the agreement. I struggle to get feedback. Really bad service