Need replacement Coaxial cable for Superhub 5

I have resorted to coming to here because the phone line and online assistant have been stonewalling me for the past half hour.

My coaxial cable is compromised and is no longer working and so I bought a new one that was recommended to fit into the hub, but that isn’t working either and is different to the one I was originally given by VM.

I have been attempting to contact VM to get a replacement but as aforementioned have been getting stonewalled, if anyone could tell me how to get a replacement or the exact name of the coaxial cable that I would need to order that would be very much appreciated as I pay a decent amount for my WiFi, just for it to not work.