A car has been parked at the side of my house (no pavement) for months. The tyres are slowly deflating and it is filled with junk. I checked the number plate and it is SORN but is on the public highway. I had to get professionals in to cut my boundary hedge because I could not get round it. I have reported it to the DVLA three times without response. There are plenty of other cars around here are being clamped and towed away. What am I doing wrong?