I need a bit of advice. My elderly DM received a £100 parking charge through the post yesterday from a company called Parking Control Management (UK) Ltd. The registration number is correct but she cannot possibly have been at the location the ticket was issued at, which is at least 200 miles from here. She's 76, and only drives about 3 miles from her house. She's obviously pretty worried about it. I have POA and want to call them, but cannot understand how they've made the mistake. What to do? Ignore or tackle them?