It's here.
VM (and predecessors) have always done rushed installations that often result in brick burst damage as a whacking great SDS drill is hurriedly shoved from inside to out, and the installer leaves the drill on hammer all the way through. That's incredibly quick, but the powerful percussive action of a commercial SDS drill will destroy the surface of any hard brick as it emerges. The proper way to do the drilling is to measure the thickness being drilled and turn off the SDS percussion for the last 25% of the the outer wall. That takes time, and that's why most VM technicians don't bother. - it's not like they or VM's directors are going to have to look at the mess.
If it is safe to do so and within your comfort zone, you might consider fixing a new burst cover yourself and asking VM to credit your account with the cost of the materials. You can buy brick burst covers (eg from Ebay or Screwfix), but in my experience the cheaper ones with a "bullet" shape (including those from Screwfix) are very poorly made - the colour fades, the plastic degrades in sunlight, they often don't sit flat on the brickwork, and that means they don't stay stuck in place. You might want to buy the ones with an inverted teardrop shape that cost about £3.50-4.00 a pop, but you'll also need a suitable all weather adhesive that'll stick plastic to masonry; Gorilla Glue might be ideal, whatever you use read and follow the instructions - this is an external application, you want it to last.. Note that it is best to try and glue the burst plate to the brickwork, because sticking anything onto cured silicone can be quite tricky.
