>i asked to see
Never, never, never contact these scammers. Shred all letters from them. If it ever goes to court (which it never will), they can't prove they ever sent anything to you (they don't have the Crown exemption).
Swmbo had something similar a couple of years ago. I stopped her ever contacting the company, letters came with ever-higher demands, which then reduced again ... to £160 ...
Having looked up the company on the www (and found a long list of cases they'd lost ), knowing swmbo'd eventually get a "solicitor's letter" from the wanker that actually owns both companies, when that arrived, I wrote swmbo a letter she signed and sent Royal Mail Signed For, that simply said she'd never heard of the "client" and would they or the "solicitor" like to send her copies of all correspondence ... we're still waiting ...
Regrettably, having contacted the company, they now know you exist. So don't expect them to leave you alone. If you 'appeal', expect it to fail as the 'independent regulator' is either them or associated with another of these scammers. Also expect "trading standards" (actually Citizens Advice) to be useless, certainly they were in swmbo's case.
Ime, you're only likely to have any success by contacting the actual Cornwall County councillors for Falmouth or a particular ward. I say this based on my experience using a Tesco car park for more than the 'allowed' three hours - letter to Tesco's CEO, reply from the Secretary to the Board, parking company told to go forth and multiply, large bunch of flowers for swmbo.