Whilst I don't want to discourage you from reporting it, I have seen many comments on forums that say that VM don't follow it up.
I myself rang them years ago and was asked if I knew who had done it. When I said I had no idea who or why it had been done, I was sarcastically told "no, no-one ever does".
When I asked what was meant by that, he said that people break into the cabinets in order to avail themselves of free services and that "I must know that".
I didn't (I didn't even have cable at the time!) and asked for an apology for the attitude and inference that I knew of or was party to fraudulent activities. In return I received yet more attitude, so took the appropriate action needed to deal with both problems.
I don't know why they don't take these cabinet reports more seriously. Fixing a door must be easier/cheaper than exposing the insides to the elements, fraud or vandalism.
It could also prevent unnecessary outages for many customers.
Good on you for taking an interest in it, i'm sure your neighbours will appreciate and/or benefit from this public spiritedness
