You maintain they did not comply with PoFA 2012.
They reject your appeal saying that they did comply.
You have the option to appeal further to the IAS within 28 days, knowing that they will reject your appeal but costing the parking company £23.
The forum is littered with similar cases if you search for them. You have your appeal, plus you can state that the rejection of your appeal does not explain how they comply with PoFA 2012 9(2)(f), and quote the relevant legislation as well.