Net nine nine Ridiculous service

Ridiculous service from net nine nine. Everything was good until there was Windy Weather and our fibre Cable tested and we made logged a call. Yesterday a technician came thinking he will fix the cable but he told us that he can’t fix the cable because the technician who came to install didn’t do a proper job and the cable had tension hence it teared apart and we have to buy a cable from net nine nine which cost R1200 which is ridiculous as it’s not our fault that the cable teared apart. This is a day light ******* and I’m asking myself each time if this happens we have to pay that ridiculous amount for them to fix. Your service is poor and you take advantage of your customers.