Installation of lines

Never in my life have I ever been so upset on a phone call like I have today. I contacted VUMA in February last year to install fibre. I was not at home and also not being technologically clued up with how it works, I trusted Vumatel to do the right thing. It was recently brought to my attention that the fibre was actually installed in my neighbours yard. I logged a query on the 16/08. I got a call from an arrogant lady, I sometimes wonder if this is a racial thing. She advises me it will cost close to R950 to reinstall, I then proceeded to ask, why, is this not your guys fault? She says were you not there when they installed, I advised my two people were at home, maybe they did sign on but I will ask and call back, to which she advised okay. I called both of them, and they both advised they did not sign anything, I did this call on a recorded line in case you want this. They said they advised them it was installed and where must they run the cables upstairs and that was that. No sign off. So I called back advising the same, this lady still arrogantly replies to say I will be liable, I am like how if there was no sign off. Things got my heated, she said she will check on her end if there was a sign off, I asked can I have proof sent to me as well. She says no, she will advise telephonically, at this point, I am agitated, I said how will I know you won't lie, she said she will risk her job by lying, so I asked I am the customer and I want to see proof, she says she will call me. Firstly what in the heck is this kind of attitude? Talking down on me and thinking I will know exactly what she knows? Secondly how can Vuma do something with no sign off? I requested this through call ideas and searched if I can find a sign off on email and I see nothing. My mum is elderly , and even though I am young it does not mean I know everything, I came home and got the passcode from Cool Ideas and went on about normal, also these cables were seen now when the neighbours were digging up? Guys is this how you treat your clients? I will not hesitate to take this further because this is just ridiculous.