Inefficient and Poor fibre installation / workmanship

Britelink_Fibrehouse Pty Ltd refuses to accept the responsibility to fix the damaged fibre cable installation, at their cost, which was poorly installed at my residence. The poor and inefficient installation involved a flexible conduit cable exposed above ground. The PVC tubing fitted against the wall at entry point to my res. was not buried underground to obviate any potential damage. The cable was severed when trimming the edge of my lawn with a very basic light duty trimmer i.e. had the cable been properly buried it would have been impossible to severe the cable unless of course done maliciously. I can confirm that Britelink did respond initially to send out their technician to assess the damage and temporarily enabled my internet connection which has now been followed by a quote of R1 725.00 for the permanent fix which I refuse to pay for reasons cited herein. I was told to pay or live with the temporary fix, which incidentally looks like a dog's breakfast, until it next breaks.