Vumatel ********* Behaviour

This morning my neighbour contacts me to confirm whether I know that Vumatel is on my property digging trenches for the installation of Fibre for the property owner behind. I immediately went home to ascertain what is going on as I have at no given time gave permission to run cables through my property for the owners behind me. I phoned Vumatel, spoke to a person called Clayton who confirmed this is wrong and that this should have been discussed with me. He said he will escalate this to the Head of Installation, Johanna, to contact me. That was this morning at around 9H00. So far no response received. I also forwarded this in writing via email, no response.

I do not understand how a company like Vumatel can think that it is "ok" to just do what they think is "good" on your property without approval?