TELKOM'S POOR FIBRE LINE SERVICE

I am a Telkom customer for the last 38 years. On 29.6.22 I was connected to a Fibre line for wifi via Telkom. From day one I had issues with buffering, between 4 to 6 times, few, seconds each time whilst watching a simple You Tube video, let alone a movie or even streaming soccer or F1. This is on a 30 Meg Fibre line, it being worse off than the 4 meg LTE that I replaced. Everytime I complained to Telkom I was told that the problem was on Frogfoot side, because they did the installation. After about 6 complaints and I even contacted Frogfoot and last week Frogfoot'S technician tested the Fibre line by linking his pc to mine and I test watched videos and streaming for 20 minutes, and all worked fine showing that the fault is on Telkom's side. After multiple calls to Telkom explaining above, speaking to numerous consultants and even sending them screenshots showing them that the PING thereon is 165ms, which is too high, which I understand should be about 10 to 20. Now I get a message from Telkom advising me that this case is closed. Yet nothing was done to sort out the problem to date. I am very disappointed for the service I am now getting from Telkom and yet the full monthly payment is deducted regularly. What recourse do I have in getting my Fibre line sorted.? This is very disappointing indeed.