Veritas alarm?

Firstly if it is a "Dummy Box" there is no cable to it.
You have cut another cable.

Their call out charges are thier affair, that is what they charge. The repair, of course they have no idea until they attend.
I`ll tell you what you have done at minimum, cut a door contact cable, so it needs repairing, maybe rerunning. Or even a new fuse somewhere in the panel.

Sounds like your not on a maintanence contract hence the higher charge and non time commital, they have paying customers they see to first under contract.

So in a nutshell, work it out yourself or pay up.
We dont know what device is being served, the colours used withing the sheaf you cut.
If you can afford a loft conversion whats another £120 quid for something done correctly?

Or ask your sparks, he`ll know what to do...............

Alarm
January 2011